Support Unicode in file names on Windows NT
[youtube-dl.git] / youtube-dl
index ae4917b..be599a2 100755 (executable)
@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-__author__  = (
+__authors__  = (
        'Ricardo Garcia Gonzalez',
        'Danny Colligan',
        'Benjamin Johnson',
@@ -12,10 +12,13 @@ __author__  = (
        'Rogério Brito',
        'Philipp Hagemeister',
        'Sören Schulze',
+       'Kevin Ngo',
+       'Ori Avtalion',
+       'shizeeg',
        )
 
 __license__ = 'Public Domain'
-__version__ = '2011.09.15'
+__version__ = '2012.01.08b'
 
 UPDATE_URL = 'https://raw.github.com/rg3/youtube-dl/master/youtube-dl'
 
@@ -77,8 +80,6 @@ std_headers = {
        'Accept-Language': 'en-us,en;q=0.5',
 }
 
-simple_title_chars = string.ascii_letters.decode('ascii') + string.digits.decode('ascii')
-
 try:
        import json
 except ImportError: # Python <2.6, use trivialjson (https://github.com/phihag/trivialjson):
@@ -258,14 +259,14 @@ def sanitize_open(filename, open_mode):
                                import msvcrt
                                msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY)
                        return (sys.stdout, filename)
-               stream = open(filename, open_mode)
+               stream = open(_encodeFilename(filename), open_mode)
                return (stream, filename)
        except (IOError, OSError), err:
                # In case of error, try to remove win32 forbidden chars
                filename = re.sub(ur'[/<>:"\|\?\*]', u'#', filename)
 
                # An exception here should be caught in the caller
-               stream = open(filename, open_mode)
+               stream = open(_encodeFilename(filename), open_mode)
                return (stream, filename)
 
 
@@ -277,6 +278,34 @@ def timeconvert(timestr):
                timestamp = email.utils.mktime_tz(timetuple)
        return timestamp
 
+def _simplify_title(title):
+       expr = re.compile(ur'[^\w\d_\-]+', flags=re.UNICODE)
+       return expr.sub(u'_', title).strip(u'_')
+
+def _orderedSet(iterable):
+       """ Remove all duplicates from the input iterable """
+       res = []
+       for el in iterable:
+               if el not in res:
+                       res.append(el)
+       return res
+
+def _unescapeHTML(s):
+       """
+       @param s a string (of type unicode)
+       """
+       assert type(s) == type(u'')
+
+       htmlParser = HTMLParser.HTMLParser()
+       return htmlParser.unescape(s)
+
+def _encodeFilename(s):
+       """
+       @param s The name of the file (of type unicode)
+       """
+
+       assert type(s) == type(u'')
+       return s.encode(sys.getfilesystemencoding(), 'ignore')
 
 class DownloadError(Exception):
        """Download Error exception.
@@ -305,6 +334,10 @@ class PostProcessingError(Exception):
        """
        pass
 
+class MaxDownloadsReached(Exception):
+       """ --max-downloads limit has been reached. """
+       pass
+
 
 class UnavailableVideoError(Exception):
        """Unavailable Format exception.
@@ -538,16 +571,17 @@ class FileDownloader(object):
                self._pps.append(pp)
                pp.set_downloader(self)
 
-       def to_screen(self, message, skip_eol=False, ignore_encoding_errors=False):
+       def to_screen(self, message, skip_eol=False):
                """Print message to stdout if not in quiet mode."""
-               try:
-                       if not self.params.get('quiet', False):
-                               terminator = [u'\n', u''][skip_eol]
-                               print >>self._screen_file, (u'%s%s' % (message, terminator)).encode(preferredencoding()),
+               assert type(message) == type(u'')
+               if not self.params.get('quiet', False):
+                       terminator = [u'\n', u''][skip_eol]
+                       output = message + terminator
+
+                       if 'b' not in self._screen_file.mode or sys.version_info[0] < 3: # Python 2 lies about the mode of sys.stdout/sys.stderr
+                               output = output.encode(preferredencoding(), 'ignore')
+                       self._screen_file.write(output)
                        self._screen_file.flush()
-               except (UnicodeEncodeError), err:
-                       if not ignore_encoding_errors:
-                               raise
 
        def to_stderr(self, message):
                """Print message to stderr."""
@@ -597,7 +631,7 @@ class FileDownloader(object):
        def temp_name(self, filename):
                """Returns a temporary filename for the given filename."""
                if self.params.get('nopart', False) or filename == u'-' or \
-                               (os.path.exists(filename) and not os.path.isfile(filename)):
+                               (os.path.exists(_encodeFilename(filename)) and not os.path.isfile(_encodeFilename(filename))):
                        return filename
                return filename + u'.part'
 
@@ -610,7 +644,7 @@ class FileDownloader(object):
                try:
                        if old_filename == new_filename:
                                return
-                       os.rename(old_filename, new_filename)
+                       os.rename(_encodeFilename(old_filename), _encodeFilename(new_filename))
                except (IOError, OSError), err:
                        self.trouble(u'ERROR: unable to rename file')
 
@@ -618,30 +652,31 @@ class FileDownloader(object):
                """Try to set the last-modified time of the given file."""
                if last_modified_hdr is None:
                        return
-               if not os.path.isfile(filename):
+               if not os.path.isfile(_encodeFilename(filename)):
                        return
                timestr = last_modified_hdr
                if timestr is None:
                        return
                filetime = timeconvert(timestr)
                if filetime is None:
-                       return
+                       return filetime
                try:
                        os.utime(filename, (time.time(), filetime))
                except:
                        pass
+               return filetime
 
        def report_writedescription(self, descfn):
                """ Report that the description file is being written """
-               self.to_screen(u'[info] Writing video description to: %s' % descfn, ignore_encoding_errors=True)
+               self.to_screen(u'[info] Writing video description to: ' + descfn)
 
        def report_writeinfojson(self, infofn):
                """ Report that the metadata file has been written """
-               self.to_screen(u'[info] Video description metadata as JSON to: %s' % infofn, ignore_encoding_errors=True)
+               self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
 
        def report_destination(self, filename):
                """Report destination filename."""
-               self.to_screen(u'[download] Destination: %s' % filename, ignore_encoding_errors=True)
+               self.to_screen(u'[download] Destination: ' + filename)
 
        def report_progress(self, percent_str, data_len_str, speed_str, eta_str):
                """Report download progress."""
@@ -694,45 +729,57 @@ class FileDownloader(object):
                        self.trouble(u'ERROR: invalid system charset or erroneous output template')
                        return None
 
+       def _match_entry(self, info_dict):
+               """ Returns None iff the file should be downloaded """
+
+               title = info_dict['title']
+               matchtitle = self.params.get('matchtitle', False)
+               if matchtitle and not re.search(matchtitle, title, re.IGNORECASE):
+                       return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
+               rejecttitle = self.params.get('rejecttitle', False)
+               if rejecttitle and re.search(rejecttitle, title, re.IGNORECASE):
+                       return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
+               return None
+
        def process_info(self, info_dict):
                """Process a single dictionary returned by an InfoExtractor."""
+
+               reason = self._match_entry(info_dict)
+               if reason is not None:
+                       self.to_screen(u'[download] ' + reason)
+                       return
+
+               max_downloads = self.params.get('max_downloads')
+               if max_downloads is not None:
+                       if self._num_downloads > int(max_downloads):
+                               raise MaxDownloadsReached()
+
                filename = self.prepare_filename(info_dict)
+               
+               # Forced printings
+               if self.params.get('forcetitle', False):
+                       print info_dict['title'].encode(preferredencoding(), 'xmlcharrefreplace')
+               if self.params.get('forceurl', False):
+                       print info_dict['url'].encode(preferredencoding(), 'xmlcharrefreplace')
+               if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
+                       print info_dict['thumbnail'].encode(preferredencoding(), 'xmlcharrefreplace')
+               if self.params.get('forcedescription', False) and 'description' in info_dict:
+                       print info_dict['description'].encode(preferredencoding(), 'xmlcharrefreplace')
+               if self.params.get('forcefilename', False) and filename is not None:
+                       print filename.encode(preferredencoding(), 'xmlcharrefreplace')
+               if self.params.get('forceformat', False):
+                       print info_dict['format'].encode(preferredencoding(), 'xmlcharrefreplace')
+
                # Do nothing else if in simulate mode
                if self.params.get('simulate', False):
-                       # Forced printings
-                       if self.params.get('forcetitle', False):
-                               print info_dict['title'].encode(preferredencoding(), 'xmlcharrefreplace')
-                       if self.params.get('forceurl', False):
-                               print info_dict['url'].encode(preferredencoding(), 'xmlcharrefreplace')
-                       if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
-                               print info_dict['thumbnail'].encode(preferredencoding(), 'xmlcharrefreplace')
-                       if self.params.get('forcedescription', False) and 'description' in info_dict:
-                               print info_dict['description'].encode(preferredencoding(), 'xmlcharrefreplace')
-                       if self.params.get('forcefilename', False) and filename is not None:
-                               print filename.encode(preferredencoding(), 'xmlcharrefreplace')
-
                        return
 
                if filename is None:
                        return
 
-               matchtitle=self.params.get('matchtitle',False)
-               rejecttitle=self.params.get('rejecttitle',False)
-               title=info_dict['title'].encode(preferredencoding(), 'xmlcharrefreplace')
-               if matchtitle and not re.search(matchtitle, title, re.IGNORECASE):
-                       self.to_screen(u'[download] "%s" title did not match pattern "%s"' % (title, matchtitle))
-                       return
-               if rejecttitle and re.search(rejecttitle, title, re.IGNORECASE):
-                       self.to_screen(u'[download] "%s" title matched reject pattern "%s"' % (title, rejecttitle))
-                       return
-                       
-               if self.params.get('nooverwrites', False) and os.path.exists(filename):
-                       self.to_stderr(u'WARNING: file exists and will be skipped')
-                       return
-
                try:
-                       dn = os.path.dirname(filename)
-                       if dn != '' and not os.path.exists(dn):
+                       dn = os.path.dirname(_encodeFilename(filename))
+                       if dn != '' and not os.path.exists(dn): # dn is already encoded
                                os.makedirs(dn)
                except (OSError, IOError), err:
                        self.trouble(u'ERROR: unable to create directory ' + unicode(err))
@@ -740,9 +787,9 @@ class FileDownloader(object):
 
                if self.params.get('writedescription', False):
                        try:
-                               descfn = filename + '.description'
+                               descfn = filename + u'.description'
                                self.report_writedescription(descfn)
-                               descfile = open(descfn, 'wb')
+                               descfile = open(_encodeFilename(descfn), 'wb')
                                try:
                                        descfile.write(info_dict['description'].encode('utf-8'))
                                finally:
@@ -752,7 +799,7 @@ class FileDownloader(object):
                                return
 
                if self.params.get('writeinfojson', False):
-                       infofn = filename + '.info.json'
+                       infofn = filename + u'.info.json'
                        self.report_writeinfojson(infofn)
                        try:
                                json.dump
@@ -760,32 +807,37 @@ class FileDownloader(object):
                                self.trouble(u'ERROR: No JSON encoder found. Update to Python 2.6+, setup a json module, or leave out --write-info-json.')
                                return
                        try:
-                               infof = open(infofn, 'wb')
+                               infof = open(_encodeFilename(infofn), 'wb')
                                try:
-                                       json.dump(info_dict, infof)
+                                       json_info_dict = dict((k,v) for k,v in info_dict.iteritems() if not k in ('urlhandle',))
+                                       json.dump(json_info_dict, infof)
                                finally:
                                        infof.close()
                        except (OSError, IOError):
                                self.trouble(u'ERROR: Cannot write metadata to JSON file ' + infofn)
                                return
 
-               try:
-                       success = self._do_download(filename, info_dict['url'].encode('utf-8'), info_dict.get('player_url', None))
-               except (OSError, IOError), err:
-                       raise UnavailableVideoError
-               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
-                       self.trouble(u'ERROR: unable to download video data: %s' % str(err))
-                       return
-               except (ContentTooShortError, ), err:
-                       self.trouble(u'ERROR: content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
-                       return
-
-               if success:
-                       try:
-                               self.post_process(filename, info_dict)
-                       except (PostProcessingError), err:
-                               self.trouble(u'ERROR: postprocessing: %s' % str(err))
-                               return
+               if not self.params.get('skip_download', False):
+                       if self.params.get('nooverwrites', False) and os.path.exists(_encodeFilename(filename)):
+                               success = True
+                       else:
+                               try:
+                                       success = self._do_download(filename, info_dict)
+                               except (OSError, IOError), err:
+                                       raise UnavailableVideoError
+                               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                                       self.trouble(u'ERROR: unable to download video data: %s' % str(err))
+                                       return
+                               except (ContentTooShortError, ), err:
+                                       self.trouble(u'ERROR: content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
+                                       return
+       
+                       if success:
+                               try:
+                                       self.post_process(filename, info_dict)
+                               except (PostProcessingError), err:
+                                       self.trouble(u'ERROR: postprocessing: %s' % str(err))
+                                       return
 
        def download(self, url_list):
                """Download a given list of URLs."""
@@ -839,11 +891,11 @@ class FileDownloader(object):
                basic_args = ['rtmpdump', '-q'] + [[], ['-W', player_url]][player_url is not None] + ['-r', url, '-o', tmpfilename]
                retval = subprocess.call(basic_args + [[], ['-e', '-k', '1']][self.params.get('continuedl', False)])
                while retval == 2 or retval == 1:
-                       prevsize = os.path.getsize(tmpfilename)
+                       prevsize = os.path.getsize(_encodeFilename(tmpfilename))
                        self.to_screen(u'\r[rtmpdump] %s bytes' % prevsize, skip_eol=True)
                        time.sleep(5.0) # This seems to be needed
                        retval = subprocess.call(basic_args + ['-e'] + [[], ['-k', '1']][retval == 1])
-                       cursize = os.path.getsize(tmpfilename)
+                       cursize = os.path.getsize(_encodeFilename(tmpfilename))
                        if prevsize == cursize and retval == 1:
                                break
                         # Some rtmp streams seem abort after ~ 99.8%. Don't complain for those
@@ -852,16 +904,19 @@ class FileDownloader(object):
                                retval = 0
                                break
                if retval == 0:
-                       self.to_screen(u'\r[rtmpdump] %s bytes' % os.path.getsize(tmpfilename))
+                       self.to_screen(u'\r[rtmpdump] %s bytes' % os.path.getsize(_encodeFilename(tmpfilename)))
                        self.try_rename(tmpfilename, filename)
                        return True
                else:
                        self.trouble(u'\nERROR: rtmpdump exited with code %d' % retval)
                        return False
 
-       def _do_download(self, filename, url, player_url):
+       def _do_download(self, filename, info_dict):
+               url = info_dict['url']
+               player_url = info_dict.get('player_url', None)
+
                # Check file already present
-               if self.params.get('continuedl', False) and os.path.isfile(filename) and not self.params.get('nopart', False):
+               if self.params.get('continuedl', False) and os.path.isfile(_encodeFilename(filename)) and not self.params.get('nopart', False):
                        self.report_file_already_downloaded(filename)
                        return True
 
@@ -871,7 +926,6 @@ class FileDownloader(object):
 
                tmpfilename = self.temp_name(filename)
                stream = None
-               open_mode = 'wb'
 
                # Do not include the Accept-Encoding header
                headers = {'Youtubedl-no-compression': 'True'}
@@ -879,22 +933,27 @@ class FileDownloader(object):
                request = urllib2.Request(url, None, headers)
 
                # Establish possible resume length
-               if os.path.isfile(tmpfilename):
-                       resume_len = os.path.getsize(tmpfilename)
+               if os.path.isfile(_encodeFilename(tmpfilename)):
+                       resume_len = os.path.getsize(_encodeFilename(tmpfilename))
                else:
                        resume_len = 0
 
-               # Request parameters in case of being able to resume
-               if self.params.get('continuedl', False) and resume_len != 0:
-                       self.report_resuming_byte(resume_len)
-                       request.add_header('Range', 'bytes=%d-' % resume_len)
-                       open_mode = 'ab'
+               open_mode = 'wb'
+               if resume_len != 0:
+                       if self.params.get('continuedl', False):
+                               self.report_resuming_byte(resume_len)
+                               request.add_header('Range','bytes=%d-' % resume_len)
+                               open_mode = 'ab'
+                       else:
+                               resume_len = 0
 
                count = 0
                retries = self.params.get('retries', 0)
                while count <= retries:
                        # Establish connection
                        try:
+                               if count == 0 and 'urlhandle' in info_dict:
+                                       data = info_dict['urlhandle']
                                data = urllib2.urlopen(request)
                                break
                        except (urllib2.HTTPError, ), err:
@@ -972,10 +1031,13 @@ class FileDownloader(object):
                        block_size = self.best_block_size(after - before, len(data_block))
 
                        # Progress message
-                       percent_str = self.calc_percent(byte_counter, data_len)
-                       eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
                        speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len)
-                       self.report_progress(percent_str, data_len_str, speed_str, eta_str)
+                       if data_len is None:
+                               self.report_progress('Unknown %', data_len_str, speed_str, 'Unknown ETA')
+                       else:
+                               percent_str = self.calc_percent(byte_counter, data_len)
+                               eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
+                               self.report_progress(percent_str, data_len_str, speed_str, eta_str)
 
                        # Apply rate limit
                        self.slow_down(start, byte_counter - resume_len)
@@ -991,7 +1053,7 @@ class FileDownloader(object):
 
                # Update file modification time
                if self.params.get('updatetime', True):
-                       self.try_utime(filename, data.info().get('last-modified', None))
+                       info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None))
 
                return True
 
@@ -1026,9 +1088,8 @@ class InfoExtractor(object):
        description:    One-line video description.
 
        Subclasses of this one should re-define the _real_initialize() and
-       _real_extract() methods, as well as the suitable() static method.
-       Probably, they should also be instantiated and added to the main
-       downloader.
+       _real_extract() methods and define a _VALID_URL regexp.
+       Probably, they should also be added to the list of extractors.
        """
 
        _ready = False
@@ -1039,10 +1100,9 @@ class InfoExtractor(object):
                self._ready = False
                self.set_downloader(downloader)
 
-       @staticmethod
-       def suitable(url):
+       def suitable(self, url):
                """Receives a URL and returns True if suitable for this IE."""
-               return False
+               return re.match(self._VALID_URL, url) is not None
 
        def initialize(self):
                """Initializes an instance (authentication, etc)."""
@@ -1071,13 +1131,14 @@ class InfoExtractor(object):
 class YoutubeIE(InfoExtractor):
        """Information extractor for youtube.com."""
 
-       _VALID_URL = r'^((?:https?://)?(?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/)(?:(?:(?:v|embed|e)/)|(?:(?:watch(?:_popup)?(?:\.php)?)?(?:\?|#!?)(?:.+&)?v=))?)?([0-9A-Za-z_-]+)(?(1).+)?$'
+       _VALID_URL = r'^((?:https?://)?(?:youtu\.be/|(?:\w+\.)?youtube(?:-nocookie)?\.com/)(?!view_play_list|my_playlists|artist|playlist)(?:(?:(?:v|embed|e)/)|(?:(?:watch(?:_popup)?(?:\.php)?)?(?:\?|#!?)(?:.+&)?v=))?)?([0-9A-Za-z_-]+)(?(1).+)?$'
        _LANG_URL = r'http://www.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1'
        _LOGIN_URL = 'https://www.youtube.com/signup?next=/&gl=US&hl=en'
        _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en'
        _NETRC_MACHINE = 'youtube'
        # Listed in order of quality
-       _available_formats = ['38', '37', '45', '22', '43', '35', '34', '18', '6', '5', '17', '13']
+       _available_formats = ['38', '37', '22', '45', '35', '44', '34', '18', '43', '6', '5', '17', '13']
+       _available_formats_prefer_free = ['38', '37', '45', '22', '44', '35', '43', '34', '18', '6', '5', '17', '13']
        _video_extensions = {
                '13': '3gp',
                '17': 'mp4',
@@ -1086,12 +1147,25 @@ class YoutubeIE(InfoExtractor):
                '37': 'mp4',
                '38': 'video', # You actually don't know if this will be MOV, AVI or whatever
                '43': 'webm',
+               '44': 'webm',
                '45': 'webm',
        }
-
-       @staticmethod
-       def suitable(url):
-               return (re.match(YoutubeIE._VALID_URL, url) is not None)
+       _video_dimensions = {
+               '5': '240x400',
+               '6': '???',
+               '13': '???',
+               '17': '144x176',
+               '18': '360x640',
+               '22': '720x1280',
+               '34': '360x640',
+               '35': '480x854',
+               '37': '1080x1920',
+               '38': '3072x4096',
+               '43': '360x640',
+               '44': '480x854',
+               '45': '720x1280',
+       }       
+       IE_NAME = u'youtube'
 
        def report_lang(self):
                """Report attempt to set language."""
@@ -1125,6 +1199,11 @@ class YoutubeIE(InfoExtractor):
                """Indicate the download will use the RTMP protocol."""
                self._downloader.to_screen(u'[youtube] RTMP download detected')
 
+       def _print_formats(self, formats):
+               print 'Available formats:'
+               for x in formats:
+                       print '%s\t:\t%s\t[%s]' %(x, self._video_extensions.get(x, 'flv'), self._video_dimensions.get(x, '???'))
+
        def _real_initialize(self):
                if self._downloader is None:
                        return
@@ -1204,7 +1283,7 @@ class YoutubeIE(InfoExtractor):
 
                # Get video webpage
                self.report_video_webpage_download(video_id)
-               request = urllib2.Request('http://www.youtube.com/watch?v=%s&gl=US&hl=en&amp;has_verified=1' % video_id)
+               request = urllib2.Request('http://www.youtube.com/watch?v=%s&gl=US&hl=en&has_verified=1' % video_id)
                try:
                        video_webpage = urllib2.urlopen(request).read()
                except (urllib2.URLError, httplib.HTTPException, socket.error), err:
@@ -1257,8 +1336,7 @@ class YoutubeIE(InfoExtractor):
                video_title = sanitize_title(video_title)
 
                # simplified title
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
-               simple_title = simple_title.strip(ur'_')
+               simple_title = _simplify_title(video_title)
 
                # thumbnail image
                if 'thumbnail_url' not in video_info:
@@ -1310,24 +1388,36 @@ class YoutubeIE(InfoExtractor):
                        url_map = dict((ud['itag'][0], ud['url'][0]) for ud in url_data)
 
                        format_limit = self._downloader.params.get('format_limit', None)
-                       if format_limit is not None and format_limit in self._available_formats:
-                               format_list = self._available_formats[self._available_formats.index(format_limit):]
+                       available_formats = self._available_formats_prefer_free if self._downloader.params.get('prefer_free_formats', False) else self._available_formats
+                       if format_limit is not None and format_limit in available_formats:
+                               format_list = available_formats[available_formats.index(format_limit):]
                        else:
-                               format_list = self._available_formats
+                               format_list = available_formats
                        existing_formats = [x for x in format_list if x in url_map]
                        if len(existing_formats) == 0:
                                self._downloader.trouble(u'ERROR: no known formats available for video')
                                return
-                       if req_format is None:
+                       if self._downloader.params.get('listformats', None):
+                               self._print_formats(existing_formats)
+                               return
+                       if req_format is None or req_format == 'best':
                                video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
-                       elif req_format == '-1':
+                       elif req_format == 'worst':
+                               video_url_list = [(existing_formats[len(existing_formats)-1], url_map[existing_formats[len(existing_formats)-1]])] # worst quality
+                       elif req_format in ('-1', 'all'):
                                video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
                        else:
-                               # Specific format
-                               if req_format not in url_map:
+                               # Specific formats. We pick the first in a slash-delimeted sequence.
+                               # For example, if '1/2/3/4' is requested and '2' and '4' are available, we pick '2'.
+                               req_formats = req_format.split('/')
+                               video_url_list = None
+                               for rf in req_formats:
+                                       if rf in url_map:
+                                               video_url_list = [(rf, url_map[rf])]
+                                               break
+                               if video_url_list is None:
                                        self._downloader.trouble(u'ERROR: requested format not available')
                                        return
-                               video_url_list = [(req_format, url_map[req_format])] # Specific format
                else:
                        self._downloader.trouble(u'ERROR: no conn or url_encoded_fmt_stream_map information found in video info')
                        return
@@ -1365,15 +1455,12 @@ class MetacafeIE(InfoExtractor):
        _DISCLAIMER = 'http://www.metacafe.com/family_filter/'
        _FILTER_POST = 'http://www.metacafe.com/f/index.php?inputType=filter&controllerGroup=user'
        _youtube_ie = None
+       IE_NAME = u'metacafe'
 
        def __init__(self, youtube_ie, downloader=None):
                InfoExtractor.__init__(self, downloader)
                self._youtube_ie = youtube_ie
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(MetacafeIE._VALID_URL, url) is not None)
-
        def report_disclaimer(self):
                """Report disclaimer retrieval."""
                self._downloader.to_screen(u'[metacafe] Retrieving disclaimer')
@@ -1507,14 +1594,11 @@ class DailymotionIE(InfoExtractor):
        """Information Extractor for Dailymotion"""
 
        _VALID_URL = r'(?i)(?:https?://)?(?:www\.)?dailymotion\.[a-z]{2,3}/video/([^_/]+)_([^/]+)'
+       IE_NAME = u'dailymotion'
 
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(DailymotionIE._VALID_URL, url) is not None)
-
        def report_download_webpage(self, video_id):
                """Report webpage download."""
                self._downloader.to_screen(u'[dailymotion] %s: Downloading webpage' % video_id)
@@ -1523,9 +1607,6 @@ class DailymotionIE(InfoExtractor):
                """Report information extraction."""
                self._downloader.to_screen(u'[dailymotion] %s: Extracting information' % video_id)
 
-       def _real_initialize(self):
-               return
-
        def _real_extract(self, url):
                # Extract id and simplified title from URL
                mobj = re.match(self._VALID_URL, url)
@@ -1537,7 +1618,6 @@ class DailymotionIE(InfoExtractor):
                self._downloader.increment_downloads()
                video_id = mobj.group(1)
 
-               simple_title = mobj.group(2).decode('utf-8')
                video_extension = 'flv'
 
                # Retrieve video webpage to extract further information
@@ -1567,12 +1647,13 @@ class DailymotionIE(InfoExtractor):
 
                video_url = mediaURL
 
-               mobj = re.search(r'(?im)<title>Dailymotion\s*-\s*(.+)\s*-\s*[^<]+?</title>', webpage)
+               mobj = re.search(r'<meta property="og:title" content="(?P<title>[^"]*)" />', webpage)
                if mobj is None:
                        self._downloader.trouble(u'ERROR: unable to extract title')
                        return
-               video_title = mobj.group(1).decode('utf-8')
+               video_title = _unescapeHTML(mobj.group('title').decode('utf-8'))
                video_title = sanitize_title(video_title)
+               simple_title = _simplify_title(video_title)
 
                mobj = re.search(r'(?im)<span class="owner[^\"]+?">[^<]+?<a [^>]+?>([^<]+?)</a></span>', webpage)
                if mobj is None:
@@ -1601,14 +1682,11 @@ class GoogleIE(InfoExtractor):
        """Information extractor for video.google.com."""
 
        _VALID_URL = r'(?:http://)?video\.google\.(?:com(?:\.au)?|co\.(?:uk|jp|kr|cr)|ca|de|es|fr|it|nl|pl)/videoplay\?docid=([^\&]+).*'
+       IE_NAME = u'video.google'
 
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(GoogleIE._VALID_URL, url) is not None)
-
        def report_download_webpage(self, video_id):
                """Report webpage download."""
                self._downloader.to_screen(u'[video.google] %s: Downloading webpage' % video_id)
@@ -1617,9 +1695,6 @@ class GoogleIE(InfoExtractor):
                """Report information extraction."""
                self._downloader.to_screen(u'[video.google] %s: Extracting information' % video_id)
 
-       def _real_initialize(self):
-               return
-
        def _real_extract(self, url):
                # Extract id from URL
                mobj = re.match(self._VALID_URL, url)
@@ -1663,7 +1738,7 @@ class GoogleIE(InfoExtractor):
                        return
                video_title = mobj.group(1).decode('utf-8')
                video_title = sanitize_title(video_title)
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
+               simple_title = _simplify_title(video_title)
 
                # Extract video description
                mobj = re.search(r'<span id=short-desc-content>([^<]*)</span>', webpage)
@@ -1711,14 +1786,11 @@ class PhotobucketIE(InfoExtractor):
        """Information extractor for photobucket.com."""
 
        _VALID_URL = r'(?:http://)?(?:[a-z0-9]+\.)?photobucket\.com/.*[\?\&]current=(.*\.flv)'
+       IE_NAME = u'photobucket'
 
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(PhotobucketIE._VALID_URL, url) is not None)
-
        def report_download_webpage(self, video_id):
                """Report webpage download."""
                self._downloader.to_screen(u'[photobucket] %s: Downloading webpage' % video_id)
@@ -1727,9 +1799,6 @@ class PhotobucketIE(InfoExtractor):
                """Report information extraction."""
                self._downloader.to_screen(u'[photobucket] %s: Extracting information' % video_id)
 
-       def _real_initialize(self):
-               return
-
        def _real_extract(self, url):
                # Extract id from URL
                mobj = re.match(self._VALID_URL, url)
@@ -1768,7 +1837,7 @@ class PhotobucketIE(InfoExtractor):
                        return
                video_title = mobj.group(1).decode('utf-8')
                video_title = sanitize_title(video_title)
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
+               simple_title = _simplify_title(vide_title)
 
                video_uploader = mobj.group(2).decode('utf-8')
 
@@ -1796,14 +1865,11 @@ class YahooIE(InfoExtractor):
        # _VPAGE_URL matches only the extractable '/watch/' URLs
        _VALID_URL = r'(?:http://)?(?:[a-z]+\.)?video\.yahoo\.com/(?:watch|network)/([0-9]+)(?:/|\?v=)([0-9]+)(?:[#\?].*)?'
        _VPAGE_URL = r'(?:http://)?video\.yahoo\.com/watch/([0-9]+)/([0-9]+)(?:[#\?].*)?'
+       IE_NAME = u'video.yahoo'
 
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(YahooIE._VALID_URL, url) is not None)
-
        def report_download_webpage(self, video_id):
                """Report webpage download."""
                self._downloader.to_screen(u'[video.yahoo] %s: Downloading webpage' % video_id)
@@ -1812,9 +1878,6 @@ class YahooIE(InfoExtractor):
                """Report information extraction."""
                self._downloader.to_screen(u'[video.yahoo] %s: Extracting information' % video_id)
 
-       def _real_initialize(self):
-               return
-
        def _real_extract(self, url, new_video=True):
                # Extract ID from URL
                mobj = re.match(self._VALID_URL, url)
@@ -1868,7 +1931,7 @@ class YahooIE(InfoExtractor):
                        self._downloader.trouble(u'ERROR: unable to extract video title')
                        return
                video_title = mobj.group(1).decode('utf-8')
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
+               simple_title = _simplify_title(video_title)
 
                mobj = re.search(r'<h2 class="ti-5"><a href="http://video\.yahoo\.com/(people|profile)/[0-9]+" beacon=".*">(.*)</a></h2>', webpage)
                if mobj is None:
@@ -1952,14 +2015,11 @@ class VimeoIE(InfoExtractor):
 
        # _VALID_URL matches Vimeo URLs
        _VALID_URL = r'(?:https?://)?(?:(?:www|player).)?vimeo\.com/(?:groups/[^/]+/)?(?:videos?/)?([0-9]+)'
+       IE_NAME = u'vimeo'
 
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(VimeoIE._VALID_URL, url) is not None)
-
        def report_download_webpage(self, video_id):
                """Report webpage download."""
                self._downloader.to_screen(u'[vimeo] %s: Downloading webpage' % video_id)
@@ -1968,9 +2028,6 @@ class VimeoIE(InfoExtractor):
                """Report information extraction."""
                self._downloader.to_screen(u'[vimeo] %s: Extracting information' % video_id)
 
-       def _real_initialize(self):
-               return
-
        def _real_extract(self, url, new_video=True):
                # Extract ID from URL
                mobj = re.match(self._VALID_URL, url)
@@ -2002,7 +2059,7 @@ class VimeoIE(InfoExtractor):
                        self._downloader.trouble(u'ERROR: unable to extract video title')
                        return
                video_title = mobj.group(1).decode('utf-8')
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
+               simple_title = _simplify_title(video_title)
 
                # Extract uploader
                mobj = re.search(r'<uploader_url>http://vimeo.com/(.*?)</uploader_url>', webpage)
@@ -2034,6 +2091,18 @@ class VimeoIE(InfoExtractor):
                        return
                sig = mobj.group(1).decode('utf-8')
 
+               # Vimeo specific: extract video quality information
+               mobj = re.search(r'<isHD>(\d+)</isHD>', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract video quality information')
+                       return
+               quality = mobj.group(1).decode('utf-8')
+
+               if int(quality) == 1:
+                       quality = 'hd'
+               else:
+                       quality = 'sd'
+
                # Vimeo specific: Extract request signature expiration
                mobj = re.search(r'<request_signature_expires>(.*?)</request_signature_expires>', webpage)
                if mobj is None:
@@ -2041,7 +2110,7 @@ class VimeoIE(InfoExtractor):
                        return
                sig_exp = mobj.group(1).decode('utf-8')
 
-               video_url = "http://vimeo.com/moogaloop/play/clip:%s/%s/%s" % (video_id, sig, sig_exp)
+               video_url = "http://vimeo.com/moogaloop/play/clip:%s/%s/%s/?q=%s" % (video_id, sig, sig_exp, quality)
 
                try:
                        # Process video information
@@ -2066,13 +2135,12 @@ class VimeoIE(InfoExtractor):
 class GenericIE(InfoExtractor):
        """Generic last-resort information extractor."""
 
+       _VALID_URL = r'.*'
+       IE_NAME = u'generic'
+
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
 
-       @staticmethod
-       def suitable(url):
-               return True
-
        def report_download_webpage(self, video_id):
                """Report webpage download."""
                self._downloader.to_screen(u'WARNING: Falling back on generic information extractor.')
@@ -2082,9 +2150,6 @@ class GenericIE(InfoExtractor):
                """Report information extraction."""
                self._downloader.to_screen(u'[generic] %s: Extracting information' % video_id)
 
-       def _real_initialize(self):
-               return
-
        def _real_extract(self, url):
                # At this point we have a new video
                self._downloader.increment_downloads()
@@ -2138,7 +2203,7 @@ class GenericIE(InfoExtractor):
                        return
                video_title = mobj.group(1).decode('utf-8')
                video_title = sanitize_title(video_title)
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
+               simple_title = _simplify_title(video_title)
 
                # video uploader is domain name
                mobj = re.match(r'(?:https?://)?([^/]*)/.*', url)
@@ -2166,21 +2231,18 @@ class GenericIE(InfoExtractor):
 
 class YoutubeSearchIE(InfoExtractor):
        """Information Extractor for YouTube search queries."""
-       _VALID_QUERY = r'ytsearch(\d+|all)?:[\s\S]+'
+       _VALID_URL = r'ytsearch(\d+|all)?:[\s\S]+'
        _TEMPLATE_URL = 'http://www.youtube.com/results?search_query=%s&page=%s&gl=US&hl=en'
        _VIDEO_INDICATOR = r'href="/watch\?v=.+?"'
        _MORE_PAGES_INDICATOR = r'(?m)>\s*Next\s*</a>'
        _youtube_ie = None
        _max_youtube_results = 1000
+       IE_NAME = u'youtube:search'
 
        def __init__(self, youtube_ie, downloader=None):
                InfoExtractor.__init__(self, downloader)
                self._youtube_ie = youtube_ie
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(YoutubeSearchIE._VALID_QUERY, url) is not None)
-
        def report_download_page(self, query, pagenum):
                """Report attempt to download playlist page with given number."""
                query = query.decode(preferredencoding())
@@ -2190,7 +2252,7 @@ class YoutubeSearchIE(InfoExtractor):
                self._youtube_ie.initialize()
 
        def _real_extract(self, query):
-               mobj = re.match(self._VALID_QUERY, query)
+               mobj = re.match(self._VALID_URL, query)
                if mobj is None:
                        self._downloader.trouble(u'ERROR: invalid search query "%s"' % query)
                        return
@@ -2258,21 +2320,18 @@ class YoutubeSearchIE(InfoExtractor):
 
 class GoogleSearchIE(InfoExtractor):
        """Information Extractor for Google Video search queries."""
-       _VALID_QUERY = r'gvsearch(\d+|all)?:[\s\S]+'
+       _VALID_URL = r'gvsearch(\d+|all)?:[\s\S]+'
        _TEMPLATE_URL = 'http://video.google.com/videosearch?q=%s+site:video.google.com&start=%s&hl=en'
        _VIDEO_INDICATOR = r'videoplay\?docid=([^\&>]+)\&'
        _MORE_PAGES_INDICATOR = r'<span>Next</span>'
        _google_ie = None
        _max_google_results = 1000
+       IE_NAME = u'video.google:search'
 
        def __init__(self, google_ie, downloader=None):
                InfoExtractor.__init__(self, downloader)
                self._google_ie = google_ie
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(GoogleSearchIE._VALID_QUERY, url) is not None)
-
        def report_download_page(self, query, pagenum):
                """Report attempt to download playlist page with given number."""
                query = query.decode(preferredencoding())
@@ -2282,7 +2341,7 @@ class GoogleSearchIE(InfoExtractor):
                self._google_ie.initialize()
 
        def _real_extract(self, query):
-               mobj = re.match(self._VALID_QUERY, query)
+               mobj = re.match(self._VALID_URL, query)
                if mobj is None:
                        self._downloader.trouble(u'ERROR: invalid search query "%s"' % query)
                        return
@@ -2350,21 +2409,18 @@ class GoogleSearchIE(InfoExtractor):
 
 class YahooSearchIE(InfoExtractor):
        """Information Extractor for Yahoo! Video search queries."""
-       _VALID_QUERY = r'yvsearch(\d+|all)?:[\s\S]+'
+       _VALID_URL = r'yvsearch(\d+|all)?:[\s\S]+'
        _TEMPLATE_URL = 'http://video.yahoo.com/search/?p=%s&o=%s'
        _VIDEO_INDICATOR = r'href="http://video\.yahoo\.com/watch/([0-9]+/[0-9]+)"'
        _MORE_PAGES_INDICATOR = r'\s*Next'
        _yahoo_ie = None
        _max_yahoo_results = 1000
+       IE_NAME = u'video.yahoo:search'
 
        def __init__(self, yahoo_ie, downloader=None):
                InfoExtractor.__init__(self, downloader)
                self._yahoo_ie = yahoo_ie
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(YahooSearchIE._VALID_QUERY, url) is not None)
-
        def report_download_page(self, query, pagenum):
                """Report attempt to download playlist page with given number."""
                query = query.decode(preferredencoding())
@@ -2374,7 +2430,7 @@ class YahooSearchIE(InfoExtractor):
                self._yahoo_ie.initialize()
 
        def _real_extract(self, query):
-               mobj = re.match(self._VALID_QUERY, query)
+               mobj = re.match(self._VALID_URL, query)
                if mobj is None:
                        self._downloader.trouble(u'ERROR: invalid search query "%s"' % query)
                        return
@@ -2443,20 +2499,17 @@ class YahooSearchIE(InfoExtractor):
 class YoutubePlaylistIE(InfoExtractor):
        """Information Extractor for YouTube playlists."""
 
-       _VALID_URL = r'(?:http://)?(?:\w+\.)?youtube.com/(?:(?:view_play_list|my_playlists|artist|playlist)\?.*?(p|a|list)=|user/.*?/user/|p/|user/.*?#[pg]/c/)([0-9A-Za-z]+)(?:/.*?/([0-9A-Za-z_-]+))?.*'
+       _VALID_URL = r'(?:https?://)?(?:\w+\.)?youtube\.com/(?:(?:course|view_play_list|my_playlists|artist|playlist)\?.*?(p|a|list)=|user/.*?/user/|p/|user/.*?#[pg]/c/)(?:PL)?([0-9A-Za-z-_]+)(?:/.*?/([0-9A-Za-z_-]+))?.*'
        _TEMPLATE_URL = 'http://www.youtube.com/%s?%s=%s&page=%s&gl=US&hl=en'
        _VIDEO_INDICATOR = r'/watch\?v=(.+?)&'
        _MORE_PAGES_INDICATOR = r'(?m)>\s*Next\s*</a>'
        _youtube_ie = None
+       IE_NAME = u'youtube:playlist'
 
        def __init__(self, youtube_ie, downloader=None):
                InfoExtractor.__init__(self, downloader)
                self._youtube_ie = youtube_ie
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(YoutubePlaylistIE._VALID_URL, url) is not None)
-
        def report_download_page(self, playlist_id, pagenum):
                """Report attempt to download playlist page with given number."""
                self._downloader.to_screen(u'[youtube] PL %s: Downloading page #%s' % (playlist_id, pagenum))
@@ -2490,7 +2543,8 @@ class YoutubePlaylistIE(InfoExtractor):
 
                while True:
                        self.report_download_page(playlist_id, pagenum)
-                       request = urllib2.Request(self._TEMPLATE_URL % (playlist_access, playlist_prefix, playlist_id, pagenum))
+                       url = self._TEMPLATE_URL % (playlist_access, playlist_prefix, playlist_id, pagenum)
+                       request = urllib2.Request(url)
                        try:
                                page = urllib2.urlopen(request).read()
                        except (urllib2.URLError, httplib.HTTPException, socket.error), err:
@@ -2520,21 +2574,18 @@ class YoutubePlaylistIE(InfoExtractor):
 class YoutubeUserIE(InfoExtractor):
        """Information Extractor for YouTube users."""
 
-       _VALID_URL = r'(?:(?:(?:http://)?(?:\w+\.)?youtube.com/user/)|ytuser:)([A-Za-z0-9_-]+)'
+       _VALID_URL = r'(?:(?:(?:https?://)?(?:\w+\.)?youtube\.com/user/)|ytuser:)([A-Za-z0-9_-]+)'
        _TEMPLATE_URL = 'http://gdata.youtube.com/feeds/api/users/%s'
        _GDATA_PAGE_SIZE = 50
        _GDATA_URL = 'http://gdata.youtube.com/feeds/api/users/%s/uploads?max-results=%d&start-index=%d'
-       _VIDEO_INDICATOR = r'/watch\?v=(.+?)&'
+       _VIDEO_INDICATOR = r'/watch\?v=(.+?)[\<&]'
        _youtube_ie = None
+       IE_NAME = u'youtube:user'
 
        def __init__(self, youtube_ie, downloader=None):
                InfoExtractor.__init__(self, downloader)
                self._youtube_ie = youtube_ie
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(YoutubeUserIE._VALID_URL, url) is not None)
-
        def report_download_page(self, username, start_index):
                """Report attempt to download user page."""
                self._downloader.to_screen(u'[youtube] user %s: Downloading video ids from %d to %d' %
@@ -2601,7 +2652,7 @@ class YoutubeUserIE(InfoExtractor):
                else:
                        video_ids = video_ids[playliststart:playlistend]
 
-               self._downloader.to_screen("[youtube] user %s: Collected %d video ids (downloading %d of them)" %
+               self._downloader.to_screen(u"[youtube] user %s: Collected %d video ids (downloading %d of them)" %
                                (username, all_ids_count, len(video_ids)))
 
                for video_id in video_ids:
@@ -2611,15 +2662,12 @@ class YoutubeUserIE(InfoExtractor):
 class DepositFilesIE(InfoExtractor):
        """Information extractor for depositfiles.com"""
 
-       _VALID_URL = r'(?:http://)?(?:\w+\.)?depositfiles.com/(?:../(?#locale))?files/(.+)'
+       _VALID_URL = r'(?:http://)?(?:\w+\.)?depositfiles\.com/(?:../(?#locale))?files/(.+)'
+       IE_NAME = u'DepositFiles'
 
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(DepositFilesIE._VALID_URL, url) is not None)
-
        def report_download_webpage(self, file_id):
                """Report webpage download."""
                self._downloader.to_screen(u'[DepositFiles] %s: Downloading webpage' % file_id)
@@ -2628,9 +2676,6 @@ class DepositFilesIE(InfoExtractor):
                """Report information extraction."""
                self._downloader.to_screen(u'[DepositFiles] %s: Extracting information' % file_id)
 
-       def _real_initialize(self):
-               return
-
        def _real_extract(self, url):
                # At this point we have a new file
                self._downloader.increment_downloads()
@@ -2691,22 +2736,20 @@ class DepositFilesIE(InfoExtractor):
 class FacebookIE(InfoExtractor):
        """Information Extractor for Facebook"""
 
-       _VALID_URL = r'^(?:https?://)?(?:\w+\.)?facebook.com/video/video.php\?(?:.*?)v=(?P<ID>\d+)(?:.*)'
+       _VALID_URL = r'^(?:https?://)?(?:\w+\.)?facebook\.com/(?:video/video|photo)\.php\?(?:.*?)v=(?P<ID>\d+)(?:.*)'
        _LOGIN_URL = 'https://login.facebook.com/login.php?m&next=http%3A%2F%2Fm.facebook.com%2Fhome.php&'
        _NETRC_MACHINE = 'facebook'
-       _available_formats = ['highqual', 'lowqual']
+       _available_formats = ['video', 'highqual', 'lowqual']
        _video_extensions = {
+               'video': 'mp4',
                'highqual': 'mp4',
                'lowqual': 'mp4',
        }
+       IE_NAME = u'facebook'
 
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
 
-       @staticmethod
-       def suitable(url):
-               return (re.match(FacebookIE._VALID_URL, url) is not None)
-
        def _reporter(self, message):
                """Add header and report message."""
                self._downloader.to_screen(u'[facebook] %s' % message)
@@ -2726,10 +2769,9 @@ class FacebookIE(InfoExtractor):
        def _parse_page(self, video_webpage):
                """Extract video information from page"""
                # General data
-               data = {'title': r'class="video_title datawrap">(.*?)</',
+               data = {'title': r'\("video_title", "(.*?)"\)',
                        'description': r'<div class="datawrap">(.*?)</div>',
                        'owner': r'\("video_owner_name", "(.*?)"\)',
-                       'upload_date': r'data-date="(.*?)"',
                        'thumbnail':  r'\("thumb_url", "(?P<THUMB>.*?)"\)',
                        }
                video_info = {}
@@ -2831,9 +2873,7 @@ class FacebookIE(InfoExtractor):
                video_title = video_title.decode('utf-8')
                video_title = sanitize_title(video_title)
 
-               # simplified title
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title)
-               simple_title = simple_title.strip(ur'_')
+               simple_title = _simplify_title(video_title)
 
                # thumbnail image
                if 'thumbnail' not in video_info:
@@ -2872,6 +2912,8 @@ class FacebookIE(InfoExtractor):
                                return
                        if req_format is None:
                                video_url_list = [(existing_formats[0], url_map[existing_formats[0]])] # Best quality
+                       elif req_format == 'worst':
+                               video_url_list = [(existing_formats[len(existing_formats)-1], url_map[existing_formats[len(existing_formats)-1]])] # worst quality
                        elif req_format == '-1':
                                video_url_list = [(f, url_map[f]) for f in existing_formats] # All formats
                        else:
@@ -2912,19 +2954,15 @@ class BlipTVIE(InfoExtractor):
 
        _VALID_URL = r'^(?:https?://)?(?:\w+\.)?blip\.tv(/.+)$'
        _URL_EXT = r'^.*\.([a-z0-9]+)$'
-
-       @staticmethod
-       def suitable(url):
-               return (re.match(BlipTVIE._VALID_URL, url) is not None)
+       IE_NAME = u'blip.tv'
 
        def report_extraction(self, file_id):
                """Report information extraction."""
-               self._downloader.to_screen(u'[blip.tv] %s: Extracting information' % file_id)
+               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, file_id))
 
-       def _simplify_title(self, title):
-               res = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', title)
-               res = res.strip(ur'_')
-               return res
+       def report_direct_download(self, title):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Direct download detected' % (self.IE_NAME, title))
 
        def _real_extract(self, url):
                mobj = re.match(self._VALID_URL, url)
@@ -2939,43 +2977,65 @@ class BlipTVIE(InfoExtractor):
                json_url = url + cchar + 'skin=json&version=2&no_wrap=1'
                request = urllib2.Request(json_url)
                self.report_extraction(mobj.group(1))
+               info = None
                try:
-                       json_code = urllib2.urlopen(request).read()
+                       urlh = urllib2.urlopen(request)
+                       if urlh.headers.get('Content-Type', '').startswith('video/'): # Direct download
+                               basename = url.split('/')[-1]
+                               title,ext = os.path.splitext(basename)
+                               title = title.decode('UTF-8')
+                               ext = ext.replace('.', '')
+                               self.report_direct_download(title)
+                               info = {
+                                       'id': title,
+                                       'url': url,
+                                       'title': title,
+                                       'stitle': _simplify_title(title),
+                                       'ext': ext,
+                                       'urlhandle': urlh
+                               }
                except (urllib2.URLError, httplib.HTTPException, socket.error), err:
                        self._downloader.trouble(u'ERROR: unable to download video info webpage: %s' % str(err))
                        return
-               try:
-                       json_data = json.loads(json_code)
-                       if 'Post' in json_data:
-                               data = json_data['Post']
-                       else:
-                               data = json_data
-
-                       upload_date = datetime.datetime.strptime(data['datestamp'], '%m-%d-%y %H:%M%p').strftime('%Y%m%d')
-                       video_url = data['media']['url']
-                       umobj = re.match(self._URL_EXT, video_url)
-                       if umobj is None:
-                               raise ValueError('Can not determine filename extension')
-                       ext = umobj.group(1)
+               if info is None: # Regular URL
+                       try:
+                               json_code = urlh.read()
+                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                               self._downloader.trouble(u'ERROR: unable to read video info webpage: %s' % str(err))
+                               return
 
-                       self._downloader.increment_downloads()
+                       try:
+                               json_data = json.loads(json_code)
+                               if 'Post' in json_data:
+                                       data = json_data['Post']
+                               else:
+                                       data = json_data
+       
+                               upload_date = datetime.datetime.strptime(data['datestamp'], '%m-%d-%y %H:%M%p').strftime('%Y%m%d')
+                               video_url = data['media']['url']
+                               umobj = re.match(self._URL_EXT, video_url)
+                               if umobj is None:
+                                       raise ValueError('Can not determine filename extension')
+                               ext = umobj.group(1)
+       
+                               info = {
+                                       'id': data['item_id'],
+                                       'url': video_url,
+                                       'uploader': data['display_name'],
+                                       'upload_date': upload_date,
+                                       'title': data['title'],
+                                       'stitle': _simplify_title(data['title']),
+                                       'ext': ext,
+                                       'format': data['media']['mimeType'],
+                                       'thumbnail': data['thumbnailUrl'],
+                                       'description': data['description'],
+                                       'player_url': data['embedUrl']
+                               }
+                       except (ValueError,KeyError), err:
+                               self._downloader.trouble(u'ERROR: unable to parse video information: %s' % repr(err))
+                               return
 
-                       info = {
-                               'id': data['item_id'],
-                               'url': video_url,
-                               'uploader': data['display_name'],
-                               'upload_date': upload_date,
-                               'title': data['title'],
-                               'stitle': self._simplify_title(data['title']),
-                               'ext': ext,
-                               'format': data['media']['mimeType'],
-                               'thumbnail': data['thumbnailUrl'],
-                               'description': data['description'],
-                               'player_url': data['embedUrl']
-                       }
-               except (ValueError,KeyError), err:
-                       self._downloader.trouble(u'ERROR: unable to parse video information: %s' % repr(err))
-                       return
+               self._downloader.increment_downloads()
 
                try:
                        self._downloader.process_info(info)
@@ -2987,14 +3047,11 @@ class MyVideoIE(InfoExtractor):
        """Information Extractor for myvideo.de."""
 
        _VALID_URL = r'(?:http://)?(?:www\.)?myvideo\.de/watch/([0-9]+)/([^?/]+).*'
+       IE_NAME = u'myvideo'
 
        def __init__(self, downloader=None):
                InfoExtractor.__init__(self, downloader)
        
-       @staticmethod
-       def suitable(url):
-               return (re.match(MyVideoIE._VALID_URL, url) is not None)
-
        def report_download_webpage(self, video_id):
                """Report webpage download."""
                self._downloader.to_screen(u'[myvideo] %s: Downloading webpage' % video_id)
@@ -3003,9 +3060,6 @@ class MyVideoIE(InfoExtractor):
                """Report information extraction."""
                self._downloader.to_screen(u'[myvideo] %s: Extracting information' % video_id)
 
-       def _real_initialize(self):
-               return
-
        def _real_extract(self,url):
                mobj = re.match(self._VALID_URL, url)
                if mobj is None:
@@ -3013,10 +3067,6 @@ class MyVideoIE(InfoExtractor):
                        return
 
                video_id = mobj.group(1)
-               simple_title = mobj.group(2).decode('utf-8')
-               # should actually not be necessary
-               simple_title = sanitize_title(simple_title)
-               simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', simple_title)
 
                # Get video webpage
                request = urllib2.Request('http://www.myvideo.de/watch/%s' % video_id)
@@ -3043,8 +3093,9 @@ class MyVideoIE(InfoExtractor):
                video_title = mobj.group(1)
                video_title = sanitize_title(video_title)
 
+               simple_title = _simplify_title(video_title)
+
                try:
-                       print(video_url)
                        self._downloader.process_info({
                                'id':           video_id,
                                'url':          video_url,
@@ -3062,11 +3113,8 @@ class MyVideoIE(InfoExtractor):
 class ComedyCentralIE(InfoExtractor):
        """Information extractor for The Daily Show and Colbert Report """
 
-       _VALID_URL = r'^(:(?P<shortname>tds|thedailyshow|cr|colbert|colbertnation|colbertreport))|(https?://)?(www\.)(?P<showname>thedailyshow|colbertnation)\.com/full-episodes/(?P<episode>.*)$'
-
-       @staticmethod
-       def suitable(url):
-               return (re.match(ComedyCentralIE._VALID_URL, url) is not None)
+       _VALID_URL = r'^(:(?P<shortname>tds|thedailyshow|cr|colbert|colbertnation|colbertreport))|(https?://)?(www\.)?(?P<showname>thedailyshow|colbertnation)\.com/full-episodes/(?P<episode>.*)$'
+       IE_NAME = u'comedycentral'
 
        def report_extraction(self, episode_id):
                self._downloader.to_screen(u'[comedycentral] %s: Extracting information' % episode_id)
@@ -3080,11 +3128,6 @@ class ComedyCentralIE(InfoExtractor):
        def report_player_url(self, episode_id):
                self._downloader.to_screen(u'[comedycentral] %s: Determining player URL' % episode_id)
 
-       def _simplify_title(self, title):
-               res = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', title)
-               res = res.strip(ur'_')
-               return res
-
        def _real_extract(self, url):
                mobj = re.match(self._VALID_URL, url)
                if mobj is None:
@@ -3093,9 +3136,9 @@ class ComedyCentralIE(InfoExtractor):
 
                if mobj.group('shortname'):
                        if mobj.group('shortname') in ('tds', 'thedailyshow'):
-                               url = 'http://www.thedailyshow.com/full-episodes/'
+                               url = u'http://www.thedailyshow.com/full-episodes/'
                        else:
-                               url = 'http://www.colbertnation.com/full-episodes/'
+                               url = u'http://www.colbertnation.com/full-episodes/'
                        mobj = re.match(self._VALID_URL, url)
                        assert mobj is not None
 
@@ -3124,7 +3167,7 @@ class ComedyCentralIE(InfoExtractor):
                                return
                        epTitle = mobj.group('episode')
 
-               mMovieParams = re.findall('<param name="movie" value="(http://media.mtvnservices.com/([^"]*episode.*?:.*?))"/>', html)
+               mMovieParams = re.findall('(?:<param name="movie" value="|var url = ")(http://media.mtvnservices.com/([^"]*episode.*?:.*?))"', html)
                if len(mMovieParams) == 0:
                        self._downloader.trouble(u'ERROR: unable to find Flash URL in webpage ' + url)
                        return
@@ -3181,14 +3224,14 @@ class ComedyCentralIE(InfoExtractor):
 
                        self._downloader.increment_downloads()
 
-                       effTitle = showId + '-' + epTitle
+                       effTitle = showId + u'-' + epTitle
                        info = {
                                'id': shortMediaId,
                                'url': video_url,
                                'uploader': showId,
                                'upload_date': officialDate,
                                'title': effTitle,
-                               'stitle': self._simplify_title(effTitle),
+                               'stitle': _simplify_title(effTitle),
                                'ext': 'mp4',
                                'format': format,
                                'thumbnail': None,
@@ -3206,11 +3249,8 @@ class ComedyCentralIE(InfoExtractor):
 class EscapistIE(InfoExtractor):
        """Information extractor for The Escapist """
 
-       _VALID_URL = r'^(https?://)?(www\.)escapistmagazine.com/videos/view/(?P<showname>[^/]+)/(?P<episode>[^/?]+)[/?].*$'
-
-       @staticmethod
-       def suitable(url):
-               return (re.match(EscapistIE._VALID_URL, url) is not None)
+       _VALID_URL = r'^(https?://)?(www\.)?escapistmagazine\.com/videos/view/(?P<showname>[^/]+)/(?P<episode>[^/?]+)[/?]?.*$'
+       IE_NAME = u'escapist'
 
        def report_extraction(self, showName):
                self._downloader.to_screen(u'[escapist] %s: Extracting information' % showName)
@@ -3218,11 +3258,6 @@ class EscapistIE(InfoExtractor):
        def report_config_download(self, showName):
                self._downloader.to_screen(u'[escapist] %s: Downloading configuration' % showName)
 
-       def _simplify_title(self, title):
-               res = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', title)
-               res = res.strip(ur'_')
-               return res
-
        def _real_extract(self, url):
                htmlParser = HTMLParser.HTMLParser()
 
@@ -3275,7 +3310,7 @@ class EscapistIE(InfoExtractor):
                        'uploader': showName,
                        'upload_date': None,
                        'title': showName,
-                       'stitle': self._simplify_title(showName),
+                       'stitle': _simplify_title(showName),
                        'ext': 'flv',
                        'format': 'flv',
                        'thumbnail': imgUrl,
@@ -3289,88 +3324,767 @@ class EscapistIE(InfoExtractor):
                        self._downloader.trouble(u'\nERROR: unable to download ' + videoId)
 
 
+class CollegeHumorIE(InfoExtractor):
+       """Information extractor for collegehumor.com"""
 
-class PostProcessor(object):
-       """Post Processor class.
+       _VALID_URL = r'^(?:https?://)?(?:www\.)?collegehumor\.com/video/(?P<videoid>[0-9]+)/(?P<shorttitle>.*)$'
+       IE_NAME = u'collegehumor'
 
-       PostProcessor objects can be added to downloaders with their
-       add_post_processor() method. When the downloader has finished a
-       successful download, it will take its internal chain of PostProcessors
-       and start calling the run() method on each one of them, first with
-       an initial argument and then with the returned value of the previous
-       PostProcessor.
+       def report_webpage(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
 
-       The chain will be stopped if one of them ever returns None or the end
-       of the chain is reached.
+       def report_extraction(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
 
-       PostProcessor objects follow a "mutual registration" process similar
-       to InfoExtractor objects.
-       """
+       def _real_extract(self, url):
+               htmlParser = HTMLParser.HTMLParser()
 
-       _downloader = None
+               mobj = re.match(self._VALID_URL, url)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+                       return
+               video_id = mobj.group('videoid')
 
-       def __init__(self, downloader=None):
-               self._downloader = downloader
+               self.report_webpage(video_id)
+               request = urllib2.Request(url)
+               try:
+                       webpage = urllib2.urlopen(request).read()
+               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
+                       return
 
-       def set_downloader(self, downloader):
-               """Sets the downloader for this PP."""
-               self._downloader = downloader
+               m = re.search(r'id="video:(?P<internalvideoid>[0-9]+)"', webpage)
+               if m is None:
+                       self._downloader.trouble(u'ERROR: Cannot extract internal video ID')
+                       return
+               internal_video_id = m.group('internalvideoid')
 
-       def run(self, information):
-               """Run the PostProcessor.
+               info = {
+                       'id': video_id,
+                       'internal_id': internal_video_id,
+               }
 
-               The "information" argument is a dictionary like the ones
-               composed by InfoExtractors. The only difference is that this
-               one has an extra field called "filepath" that points to the
-               downloaded file.
+               self.report_extraction(video_id)
+               xmlUrl = 'http://www.collegehumor.com/moogaloop/video:' + internal_video_id
+               try:
+                       metaXml = urllib2.urlopen(xmlUrl).read()
+               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                       self._downloader.trouble(u'ERROR: unable to download video info XML: %s' % str(err))
+                       return
 
-               When this method returns None, the postprocessing chain is
-               stopped. However, this method may return an information
-               dictionary that will be passed to the next postprocessing
-               object in the chain. It can be the one it received after
-               changing some fields.
+               mdoc = xml.etree.ElementTree.fromstring(metaXml)
+               try:
+                       videoNode = mdoc.findall('./video')[0]
+                       info['description'] = videoNode.findall('./description')[0].text
+                       info['title'] = videoNode.findall('./caption')[0].text
+                       info['stitle'] = _simplify_title(info['title'])
+                       info['url'] = videoNode.findall('./file')[0].text
+                       info['thumbnail'] = videoNode.findall('./thumbnail')[0].text
+                       info['ext'] = info['url'].rpartition('.')[2]
+                       info['format'] = info['ext']
+               except IndexError:
+                       self._downloader.trouble(u'\nERROR: Invalid metadata XML file')
+                       return
 
-               In addition, this method may raise a PostProcessingError
-               exception that will be taken into account by the downloader
-               it was called from.
-               """
-               return information # by default, do nothing
+               self._downloader.increment_downloads()
 
+               try:
+                       self._downloader.process_info(info)
+               except UnavailableVideoError, err:
+                       self._downloader.trouble(u'\nERROR: unable to download video')
 
-class FFmpegExtractAudioPP(PostProcessor):
 
-       def __init__(self, downloader=None, preferredcodec=None):
-               PostProcessor.__init__(self, downloader)
-               if preferredcodec is None:
-                       preferredcodec = 'best'
-               self._preferredcodec = preferredcodec
+class XVideosIE(InfoExtractor):
+       """Information extractor for xvideos.com"""
 
-       @staticmethod
-       def get_audio_codec(path):
-               try:
-                       cmd = ['ffprobe', '-show_streams', '--', path]
-                       handle = subprocess.Popen(cmd, stderr=file(os.path.devnull, 'w'), stdout=subprocess.PIPE)
-                       output = handle.communicate()[0]
-                       if handle.wait() != 0:
-                               return None
-               except (IOError, OSError):
-                       return None
-               audio_codec = None
-               for line in output.split('\n'):
-                       if line.startswith('codec_name='):
-                               audio_codec = line.split('=')[1].strip()
-                       elif line.strip() == 'codec_type=audio' and audio_codec is not None:
-                               return audio_codec
-               return None
+       _VALID_URL = r'^(?:https?://)?(?:www\.)?xvideos\.com/video([0-9]+)(?:.*)'
+       IE_NAME = u'xvideos'
 
-       @staticmethod
-       def run_ffmpeg(path, out_path, codec, more_opts):
-               try:
-                       cmd = ['ffmpeg', '-y', '-i', path, '-vn', '-acodec', codec] + more_opts + ['--', out_path]
-                       ret = subprocess.call(cmd, stdout=file(os.path.devnull, 'w'), stderr=subprocess.STDOUT)
-                       return (ret == 0)
-               except (IOError, OSError):
-                       return False
+       def report_webpage(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
+
+       def report_extraction(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
+
+       def _real_extract(self, url):
+               htmlParser = HTMLParser.HTMLParser()
+
+               mobj = re.match(self._VALID_URL, url)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+                       return
+               video_id = mobj.group(1).decode('utf-8')
+
+               self.report_webpage(video_id)
+
+               request = urllib2.Request(r'http://www.xvideos.com/video' + video_id)
+               try:
+                       webpage = urllib2.urlopen(request).read()
+               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
+                       return
+
+               self.report_extraction(video_id)
+
+
+               # Extract video URL
+               mobj = re.search(r'flv_url=(.+?)&', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract video url')
+                       return
+               video_url = urllib2.unquote(mobj.group(1).decode('utf-8'))
+
+
+               # Extract title
+               mobj = re.search(r'<title>(.*?)\s+-\s+XVID', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract video title')
+                       return
+               video_title = mobj.group(1).decode('utf-8')
+
+
+               # Extract video thumbnail
+               mobj = re.search(r'http://(?:img.*?\.)xvideos.com/videos/thumbs/[a-fA-F0-9]/[a-fA-F0-9]/[a-fA-F0-9]/([a-fA-F0-9.]+jpg)', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract video thumbnail')
+                       return
+               video_thumbnail = mobj.group(1).decode('utf-8')
+
+
+
+               self._downloader.increment_downloads()
+               info = {
+                       'id': video_id,
+                       'url': video_url,
+                       'uploader': None,
+                       'upload_date': None,
+                       'title': video_title,
+                       'stitle': _simplify_title(video_title),
+                       'ext': 'flv',
+                       'format': 'flv',
+                       'thumbnail': video_thumbnail,
+                       'description': None,
+                       'player_url': None,
+               }
+
+               try:
+                       self._downloader.process_info(info)
+               except UnavailableVideoError, err:
+                       self._downloader.trouble(u'\nERROR: unable to download ' + video_id)
+
+
+class SoundcloudIE(InfoExtractor):
+       """Information extractor for soundcloud.com
+          To access the media, the uid of the song and a stream token
+          must be extracted from the page source and the script must make
+          a request to media.soundcloud.com/crossdomain.xml. Then
+          the media can be grabbed by requesting from an url composed
+          of the stream token and uid
+        """
+
+       _VALID_URL = r'^(?:https?://)?(?:www\.)?soundcloud\.com/([\w\d-]+)/([\w\d-]+)'
+       IE_NAME = u'soundcloud'
+
+       def __init__(self, downloader=None):
+               InfoExtractor.__init__(self, downloader)
+
+       def report_webpage(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
+
+       def report_extraction(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
+
+       def _real_extract(self, url):
+               htmlParser = HTMLParser.HTMLParser()
+
+               mobj = re.match(self._VALID_URL, url)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+                       return
+
+               # extract uploader (which is in the url)
+               uploader = mobj.group(1).decode('utf-8')
+               # extract simple title (uploader + slug of song title)
+               slug_title =  mobj.group(2).decode('utf-8')
+               simple_title = uploader + '-' + slug_title
+
+               self.report_webpage('%s/%s' % (uploader, slug_title))
+
+               request = urllib2.Request('http://soundcloud.com/%s/%s' % (uploader, slug_title))
+               try:
+                       webpage = urllib2.urlopen(request).read()
+               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
+                       return
+
+               self.report_extraction('%s/%s' % (uploader, slug_title))
+
+               # extract uid and stream token that soundcloud hands out for access
+               mobj = re.search('"uid":"([\w\d]+?)".*?stream_token=([\w\d]+)', webpage)
+               if mobj:
+                       video_id = mobj.group(1)
+                       stream_token = mobj.group(2)
+
+               # extract unsimplified title
+               mobj = re.search('"title":"(.*?)",', webpage)
+               if mobj:
+                       title = mobj.group(1)
+
+               # construct media url (with uid/token)
+               mediaURL = "http://media.soundcloud.com/stream/%s?stream_token=%s"
+               mediaURL = mediaURL % (video_id, stream_token)
+
+               # description
+               description = u'No description available'
+               mobj = re.search('track-description-value"><p>(.*?)</p>', webpage)
+               if mobj:
+                       description = mobj.group(1)
+               
+               # upload date
+               upload_date = None
+               mobj = re.search("pretty-date'>on ([\w]+ [\d]+, [\d]+ \d+:\d+)</abbr></h2>", webpage)
+               if mobj:
+                       try:
+                               upload_date = datetime.datetime.strptime(mobj.group(1), '%B %d, %Y %H:%M').strftime('%Y%m%d')
+                       except Exception, e:
+                               print str(e)
+
+               # for soundcloud, a request to a cross domain is required for cookies
+               request = urllib2.Request('http://media.soundcloud.com/crossdomain.xml', std_headers)
+
+               try:
+                       self._downloader.process_info({
+                               'id':           video_id.decode('utf-8'),
+                               'url':          mediaURL,
+                               'uploader':     uploader.decode('utf-8'),
+                               'upload_date':  upload_date,
+                               'title':        simple_title.decode('utf-8'),
+                               'stitle':       simple_title.decode('utf-8'),
+                               'ext':          u'mp3',
+                               'format':       u'NA',
+                               'player_url':   None,
+                               'description': description.decode('utf-8')
+                       })
+               except UnavailableVideoError:
+                       self._downloader.trouble(u'\nERROR: unable to download video')
+
+
+class InfoQIE(InfoExtractor):
+       """Information extractor for infoq.com"""
+
+       _VALID_URL = r'^(?:https?://)?(?:www\.)?infoq\.com/[^/]+/[^/]+$'
+       IE_NAME = u'infoq'
+
+       def report_webpage(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
+
+       def report_extraction(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
+
+       def _real_extract(self, url):
+               htmlParser = HTMLParser.HTMLParser()
+
+               mobj = re.match(self._VALID_URL, url)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+                       return
+
+               self.report_webpage(url)
+
+               request = urllib2.Request(url)
+               try:
+                       webpage = urllib2.urlopen(request).read()
+               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
+                       return
+
+               self.report_extraction(url)
+
+
+               # Extract video URL
+               mobj = re.search(r"jsclassref='([^']*)'", webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract video url')
+                       return
+               video_url = 'rtmpe://video.infoq.com/cfx/st/' + urllib2.unquote(mobj.group(1).decode('base64'))
+
+
+               # Extract title
+               mobj = re.search(r'contentTitle = "(.*?)";', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract video title')
+                       return
+               video_title = mobj.group(1).decode('utf-8')
+
+               # Extract description
+               video_description = u'No description available.'
+               mobj = re.search(r'<meta name="description" content="(.*)"(?:\s*/)?>', webpage)
+               if mobj is not None:
+                       video_description = mobj.group(1).decode('utf-8')
+
+               video_filename = video_url.split('/')[-1]
+               video_id, extension = video_filename.split('.')
+
+               self._downloader.increment_downloads()
+               info = {
+                       'id': video_id,
+                       'url': video_url,
+                       'uploader': None,
+                       'upload_date': None,
+                       'title': video_title,
+                       'stitle': _simplify_title(video_title),
+                       'ext': extension,
+                       'format': extension, # Extension is always(?) mp4, but seems to be flv
+                       'thumbnail': None,
+                       'description': video_description,
+                       'player_url': None,
+               }
+
+               try:
+                       self._downloader.process_info(info)
+               except UnavailableVideoError, err:
+                       self._downloader.trouble(u'\nERROR: unable to download ' + video_url)
+
+class MixcloudIE(InfoExtractor):
+       """Information extractor for www.mixcloud.com"""
+       _VALID_URL = r'^(?:https?://)?(?:www\.)?mixcloud\.com/([\w\d-]+)/([\w\d-]+)'
+       IE_NAME = u'mixcloud'
+
+       def __init__(self, downloader=None):
+               InfoExtractor.__init__(self, downloader)
+
+       def report_download_json(self, file_id):
+               """Report JSON download."""
+               self._downloader.to_screen(u'[%s] Downloading json' % self.IE_NAME)
+
+       def report_extraction(self, file_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, file_id))
+
+       def get_urls(self, jsonData, fmt, bitrate='best'):
+               """Get urls from 'audio_formats' section in json"""
+               file_url = None
+               try:
+                       bitrate_list = jsonData[fmt]
+                       if bitrate is None or bitrate == 'best' or bitrate not in bitrate_list:
+                               bitrate = max(bitrate_list) # select highest
+
+                       url_list = jsonData[fmt][bitrate]
+               except TypeError: # we have no bitrate info.
+                       url_list = jsonData[fmt]
+                               
+               return url_list
+
+       def check_urls(self, url_list):
+               """Returns 1st active url from list"""
+               for url in url_list:
+                       try:
+                               urllib2.urlopen(url)
+                               return url
+                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                               url = None
+
+               return None
+
+       def _print_formats(self, formats):
+               print 'Available formats:'
+               for fmt in formats.keys():
+                       for b in formats[fmt]:
+                               try:
+                                       ext = formats[fmt][b][0]
+                                       print '%s\t%s\t[%s]' % (fmt, b, ext.split('.')[-1])
+                               except TypeError: # we have no bitrate info
+                                       ext = formats[fmt][0]
+                                       print '%s\t%s\t[%s]' % (fmt, '??', ext.split('.')[-1])
+                                       break
+
+       def _real_extract(self, url):
+               mobj = re.match(self._VALID_URL, url)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+                       return
+               # extract uploader & filename from url
+               uploader = mobj.group(1).decode('utf-8')
+               file_id = uploader + "-" + mobj.group(2).decode('utf-8')
+
+               # construct API request
+               file_url = 'http://www.mixcloud.com/api/1/cloudcast/' + '/'.join(url.split('/')[-3:-1]) + '.json'
+               # retrieve .json file with links to files
+               request = urllib2.Request(file_url)
+               try:
+                       self.report_download_json(file_url)
+                       jsonData = urllib2.urlopen(request).read()
+               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                       self._downloader.trouble(u'ERROR: Unable to retrieve file: %s' % str(err))
+                       return
+
+               # parse JSON
+               json_data = json.loads(jsonData)
+               player_url = json_data['player_swf_url']
+               formats = dict(json_data['audio_formats'])
+
+               req_format = self._downloader.params.get('format', None)
+               bitrate = None
+
+               if self._downloader.params.get('listformats', None):
+                       self._print_formats(formats)
+                       return
+
+               if req_format is None or req_format == 'best':
+                       for format_param in formats.keys():
+                               url_list = self.get_urls(formats, format_param)
+                               # check urls
+                               file_url = self.check_urls(url_list)
+                               if file_url is not None:
+                                       break # got it!
+               else:
+                       if req_format not in formats.keys():
+                               self._downloader.trouble(u'ERROR: format is not available')
+                               return
+
+                       url_list = self.get_urls(formats, req_format)
+                       file_url = self.check_urls(url_list)
+                       format_param = req_format
+
+               # We have audio
+               self._downloader.increment_downloads()
+               try:
+                       # Process file information
+                       self._downloader.process_info({
+                               'id': file_id.decode('utf-8'),
+                               'url': file_url.decode('utf-8'),
+                               'uploader':     uploader.decode('utf-8'),
+                               'upload_date': u'NA',
+                               'title': json_data['name'],
+                               'stitle': _simplify_title(json_data['name']),
+                               'ext': file_url.split('.')[-1].decode('utf-8'),
+                               'format': (format_param is None and u'NA' or format_param.decode('utf-8')),
+                               'thumbnail': json_data['thumbnail_url'],
+                               'description': json_data['description'],
+                               'player_url': player_url.decode('utf-8'),
+                       })
+               except UnavailableVideoError, err:
+                       self._downloader.trouble(u'ERROR: unable to download file')
+
+class StanfordOpenClassroomIE(InfoExtractor):
+       """Information extractor for Stanford's Open ClassRoom"""
+
+       _VALID_URL = r'^(?:https?://)?openclassroom.stanford.edu(?P<path>/?|(/MainFolder/(?:HomePage|CoursePage|VideoPage)\.php([?]course=(?P<course>[^&]+)(&video=(?P<video>[^&]+))?(&.*)?)?))$'
+       IE_NAME = u'stanfordoc'
+
+       def report_download_webpage(self, objid):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, objid))
+
+       def report_extraction(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
+
+       def _real_extract(self, url):
+               mobj = re.match(self._VALID_URL, url)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+                       return
+
+               if mobj.group('course') and mobj.group('video'): # A specific video
+                       course = mobj.group('course')
+                       video = mobj.group('video')
+                       info = {
+                               'id': _simplify_title(course + '_' + video),
+                       }
+       
+                       self.report_extraction(info['id'])
+                       baseUrl = 'http://openclassroom.stanford.edu/MainFolder/courses/' + course + '/videos/'
+                       xmlUrl = baseUrl + video + '.xml'
+                       try:
+                               metaXml = urllib2.urlopen(xmlUrl).read()
+                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                               self._downloader.trouble(u'ERROR: unable to download video info XML: %s' % unicode(err))
+                               return
+                       mdoc = xml.etree.ElementTree.fromstring(metaXml)
+                       try:
+                               info['title'] = mdoc.findall('./title')[0].text
+                               info['url'] = baseUrl + mdoc.findall('./videoFile')[0].text
+                       except IndexError:
+                               self._downloader.trouble(u'\nERROR: Invalid metadata XML file')
+                               return
+                       info['stitle'] = _simplify_title(info['title'])
+                       info['ext'] = info['url'].rpartition('.')[2]
+                       info['format'] = info['ext']
+                       self._downloader.increment_downloads()
+                       try:
+                               self._downloader.process_info(info)
+                       except UnavailableVideoError, err:
+                               self._downloader.trouble(u'\nERROR: unable to download video')
+               elif mobj.group('course'): # A course page
+                       unescapeHTML = HTMLParser.HTMLParser().unescape
+
+                       course = mobj.group('course')
+                       info = {
+                               'id': _simplify_title(course),
+                               'type': 'playlist',
+                       }
+
+                       self.report_download_webpage(info['id'])
+                       try:
+                               coursepage = urllib2.urlopen(url).read()
+                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                               self._downloader.trouble(u'ERROR: unable to download course info page: ' + unicode(err))
+                               return
+
+                       m = re.search('<h1>([^<]+)</h1>', coursepage)
+                       if m:
+                               info['title'] = unescapeHTML(m.group(1))
+                       else:
+                               info['title'] = info['id']
+                       info['stitle'] = _simplify_title(info['title'])
+
+                       m = re.search('<description>([^<]+)</description>', coursepage)
+                       if m:
+                               info['description'] = unescapeHTML(m.group(1))
+
+                       links = _orderedSet(re.findall('<a href="(VideoPage.php\?[^"]+)">', coursepage))
+                       info['list'] = [
+                               {
+                                       'type': 'reference',
+                                       'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(vpage),
+                               }
+                                       for vpage in links]
+
+                       for entry in info['list']:
+                               assert entry['type'] == 'reference'
+                               self.extract(entry['url'])
+               else: # Root page
+                       unescapeHTML = HTMLParser.HTMLParser().unescape
+
+                       info = {
+                               'id': 'Stanford OpenClassroom',
+                               'type': 'playlist',
+                       }
+
+                       self.report_download_webpage(info['id'])
+                       rootURL = 'http://openclassroom.stanford.edu/MainFolder/HomePage.php'
+                       try:
+                               rootpage = urllib2.urlopen(rootURL).read()
+                       except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                               self._downloader.trouble(u'ERROR: unable to download course info page: ' + unicode(err))
+                               return
+
+                       info['title'] = info['id']
+                       info['stitle'] = _simplify_title(info['title'])
+
+                       links = _orderedSet(re.findall('<a href="(CoursePage.php\?[^"]+)">', rootpage))
+                       info['list'] = [
+                               {
+                                       'type': 'reference',
+                                       'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(cpage),
+                               }
+                                       for cpage in links]
+
+                       for entry in info['list']:
+                               assert entry['type'] == 'reference'
+                               self.extract(entry['url'])
+
+class MTVIE(InfoExtractor):
+       """Information extractor for MTV.com"""
+
+       _VALID_URL = r'^(?P<proto>https?://)?(?:www\.)?mtv\.com/videos/[^/]+/(?P<videoid>[0-9]+)/[^/]+$'
+       IE_NAME = u'mtv'
+
+       def report_webpage(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Downloading webpage' % (self.IE_NAME, video_id))
+
+       def report_extraction(self, video_id):
+               """Report information extraction."""
+               self._downloader.to_screen(u'[%s] %s: Extracting information' % (self.IE_NAME, video_id))
+
+       def _real_extract(self, url):
+               mobj = re.match(self._VALID_URL, url)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: invalid URL: %s' % url)
+                       return
+               if not mobj.group('proto'):
+                       url = 'http://' + url
+               video_id = mobj.group('videoid')
+               self.report_webpage(video_id)
+
+               request = urllib2.Request(url)
+               try:
+                       webpage = urllib2.urlopen(request).read()
+               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                       self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err))
+                       return
+
+               mobj = re.search(r'<meta name="mtv_vt" content="([^"]+)"/>', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract song name')
+                       return
+               song_name = _unescapeHTML(mobj.group(1).decode('iso-8859-1'))
+               mobj = re.search(r'<meta name="mtv_an" content="([^"]+)"/>', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract performer')
+                       return
+               performer = _unescapeHTML(mobj.group(1).decode('iso-8859-1'))
+               video_title = performer + ' - ' + song_name 
+
+               mobj = re.search(r'<meta name="mtvn_uri" content="([^"]+)"/>', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to mtvn_uri')
+                       return
+               mtvn_uri = mobj.group(1)
+
+               mobj = re.search(r'MTVN.Player.defaultPlaylistId = ([0-9]+);', webpage)
+               if mobj is None:
+                       self._downloader.trouble(u'ERROR: unable to extract content id')
+                       return
+               content_id = mobj.group(1)
+
+               videogen_url = 'http://www.mtv.com/player/includes/mediaGen.jhtml?uri=' + mtvn_uri + '&id=' + content_id + '&vid=' + video_id + '&ref=www.mtvn.com&viewUri=' + mtvn_uri
+               self.report_extraction(video_id)
+               request = urllib2.Request(videogen_url)
+               try:
+                       metadataXml = urllib2.urlopen(request).read()
+               except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+                       self._downloader.trouble(u'ERROR: unable to download video metadata: %s' % str(err))
+                       return
+
+               mdoc = xml.etree.ElementTree.fromstring(metadataXml)
+               renditions = mdoc.findall('.//rendition')
+
+               # For now, always pick the highest quality.
+               rendition = renditions[-1]
+
+               try:
+                       _,_,ext = rendition.attrib['type'].partition('/')
+                       format = ext + '-' + rendition.attrib['width'] + 'x' + rendition.attrib['height'] + '_' + rendition.attrib['bitrate']
+                       video_url = rendition.find('./src').text
+               except KeyError:
+                       self._downloader.trouble('Invalid rendition field.')
+                       return
+
+               self._downloader.increment_downloads()
+               info = {
+                       'id': video_id,
+                       'url': video_url,
+                       'uploader': performer,
+                       'title': video_title,
+                       'stitle': _simplify_title(video_title),
+                       'ext': ext,
+                       'format': format,
+               }
+
+               try:
+                       self._downloader.process_info(info)
+               except UnavailableVideoError, err:
+                       self._downloader.trouble(u'\nERROR: unable to download ' + video_id)
+
+
+class PostProcessor(object):
+       """Post Processor class.
+
+       PostProcessor objects can be added to downloaders with their
+       add_post_processor() method. When the downloader has finished a
+       successful download, it will take its internal chain of PostProcessors
+       and start calling the run() method on each one of them, first with
+       an initial argument and then with the returned value of the previous
+       PostProcessor.
+
+       The chain will be stopped if one of them ever returns None or the end
+       of the chain is reached.
+
+       PostProcessor objects follow a "mutual registration" process similar
+       to InfoExtractor objects.
+       """
+
+       _downloader = None
+
+       def __init__(self, downloader=None):
+               self._downloader = downloader
+
+       def set_downloader(self, downloader):
+               """Sets the downloader for this PP."""
+               self._downloader = downloader
+
+       def run(self, information):
+               """Run the PostProcessor.
+
+               The "information" argument is a dictionary like the ones
+               composed by InfoExtractors. The only difference is that this
+               one has an extra field called "filepath" that points to the
+               downloaded file.
+
+               When this method returns None, the postprocessing chain is
+               stopped. However, this method may return an information
+               dictionary that will be passed to the next postprocessing
+               object in the chain. It can be the one it received after
+               changing some fields.
+
+               In addition, this method may raise a PostProcessingError
+               exception that will be taken into account by the downloader
+               it was called from.
+               """
+               return information # by default, do nothing
+
+class AudioConversionError(BaseException):
+       def __init__(self, message):
+               self.message = message
+
+class FFmpegExtractAudioPP(PostProcessor):
+
+       def __init__(self, downloader=None, preferredcodec=None, preferredquality=None, keepvideo=False):
+               PostProcessor.__init__(self, downloader)
+               if preferredcodec is None:
+                       preferredcodec = 'best'
+               self._preferredcodec = preferredcodec
+               self._preferredquality = preferredquality
+               self._keepvideo = keepvideo
+
+       @staticmethod
+       def get_audio_codec(path):
+               try:
+                       cmd = ['ffprobe', '-show_streams', '--', _encodeFilename(path)]
+                       handle = subprocess.Popen(cmd, stderr=file(os.path.devnull, 'w'), stdout=subprocess.PIPE)
+                       output = handle.communicate()[0]
+                       if handle.wait() != 0:
+                               return None
+               except (IOError, OSError):
+                       return None
+               audio_codec = None
+               for line in output.split('\n'):
+                       if line.startswith('codec_name='):
+                               audio_codec = line.split('=')[1].strip()
+                       elif line.strip() == 'codec_type=audio' and audio_codec is not None:
+                               return audio_codec
+               return None
+
+       @staticmethod
+       def run_ffmpeg(path, out_path, codec, more_opts):
+               if codec is None:
+                       acodec_opts = []
+               else:
+                       acodec_opts = ['-acodec', codec]
+               cmd = ['ffmpeg', '-y', '-i', _encodeFilename(path), '-vn'] + acodec_opts + more_opts + ['--', _encodeFilename(out_path)]
+               try:
+                       p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+                       stdout,stderr = p.communicate()
+               except (IOError, OSError):
+                       e = sys.exc_info()[1]
+                       if isinstance(e, OSError) and e.errno == 2:
+                               raise AudioConversionError('ffmpeg not found. Please install ffmpeg.')
+                       else:
+                               raise e
+               if p.returncode != 0:
+                       msg = stderr.strip().split('\n')[-1]
+                       raise AudioConversionError(msg)
 
        def run(self, information):
                path = information['filepath']
@@ -3381,41 +4095,71 @@ class FFmpegExtractAudioPP(PostProcessor):
                        return None
 
                more_opts = []
-               if self._preferredcodec == 'best' or self._preferredcodec == filecodec:
-                       if filecodec == 'aac' or filecodec == 'mp3':
+               if self._preferredcodec == 'best' or self._preferredcodec == filecodec or (self._preferredcodec == 'm4a' and filecodec == 'aac'):
+                       if self._preferredcodec == 'm4a' and filecodec == 'aac':
+                               # Lossless, but in another container
+                               acodec = 'copy'
+                               extension = self._preferredcodec
+                               more_opts = ['-absf', 'aac_adtstoasc']
+                       elif filecodec in ['aac', 'mp3', 'vorbis']:
                                # Lossless if possible
                                acodec = 'copy'
                                extension = filecodec
                                if filecodec == 'aac':
                                        more_opts = ['-f', 'adts']
+                               if filecodec == 'vorbis':
+                                       extension = 'ogg'
                        else:
                                # MP3 otherwise.
                                acodec = 'libmp3lame'
                                extension = 'mp3'
-                               more_opts = ['-ab', '128k']
+                               more_opts = []
+                               if self._preferredquality is not None:
+                                       more_opts += ['-ab', self._preferredquality]
                else:
                        # We convert the audio (lossy)
-                       acodec = {'mp3': 'libmp3lame', 'aac': 'aac'}[self._preferredcodec]
+                       acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'm4a': 'aac', 'vorbis': 'libvorbis', 'wav': None}[self._preferredcodec]
                        extension = self._preferredcodec
-                       more_opts = ['-ab', '128k']
+                       more_opts = []
+                       if self._preferredquality is not None:
+                               more_opts += ['-ab', self._preferredquality]
                        if self._preferredcodec == 'aac':
                                more_opts += ['-f', 'adts']
-
-               (prefix, ext) = os.path.splitext(path)
-               new_path = prefix + '.' + extension
-               self._downloader.to_screen(u'[ffmpeg] Destination: %s' % new_path)
-               status = self.run_ffmpeg(path, new_path, acodec, more_opts)
-
-               if not status:
-                       self._downloader.to_stderr(u'WARNING: error running ffmpeg')
-                       return None
-
+                       if self._preferredcodec == 'm4a':
+                               more_opts += ['-absf', 'aac_adtstoasc']
+                       if self._preferredcodec == 'vorbis':
+                               extension = 'ogg'
+                       if self._preferredcodec == 'wav':
+                               extension = 'wav'
+                               more_opts += ['-f', 'wav']
+
+               prefix, sep, ext = path.rpartition(u'.') # not os.path.splitext, since the latter does not work on unicode in all setups
+               new_path = prefix + sep + extension
+               self._downloader.to_screen(u'[ffmpeg] Destination: ' + new_path)
                try:
-                       os.remove(path)
-               except (IOError, OSError):
-                       self._downloader.to_stderr(u'WARNING: Unable to remove downloaded video file')
+                       self.run_ffmpeg(path, new_path, acodec, more_opts)
+               except:
+                       etype,e,tb = sys.exc_info()
+                       if isinstance(e, AudioConversionError):
+                               self._downloader.to_stderr(u'ERROR: audio conversion failed: ' + e.message)
+                       else:
+                               self._downloader.to_stderr(u'ERROR: error running ffmpeg')
                        return None
 
+               # Try to update the date time for extracted audio file.
+               if information.get('filetime') is not None:
+                       try:
+                               os.utime(_encodeFilename(new_path), (time.time(), information['filetime']))
+                       except:
+                               self._downloader.to_stderr(u'WARNING: Cannot update utime of audio file')
+
+               if not self._keepvideo:
+                       try:
+                               os.remove(_encodeFilename(path))
+                       except (IOError, OSError):
+                               self._downloader.to_stderr(u'WARNING: Unable to remove downloaded video file')
+                               return None
+
                information['filepath'] = new_path
                return information
 
@@ -3426,12 +4170,17 @@ def updateSelf(downloader, filename):
        if not os.access(filename, os.W_OK):
                sys.exit('ERROR: no write permissions on %s' % filename)
 
-       downloader.to_screen('Updating to latest version...')
+       downloader.to_screen(u'Updating to latest version...')
 
        try:
                try:
                        urlh = urllib.urlopen(UPDATE_URL)
                        newcontent = urlh.read()
+                       
+                       vmatch = re.search("__version__ = '([^']+)'", newcontent)
+                       if vmatch is not None and vmatch.group(1) == __version__:
+                               downloader.to_screen(u'youtube-dl is up-to-date (' + __version__ + ')')
+                               return
                finally:
                        urlh.close()
        except (IOError, OSError), err:
@@ -3446,12 +4195,26 @@ def updateSelf(downloader, filename):
        except (IOError, OSError), err:
                sys.exit('ERROR: unable to overwrite current version')
 
-       downloader.to_screen('Updated youtube-dl. Restart to use the new version.')
+       downloader.to_screen(u'Updated youtube-dl. Restart youtube-dl to use the new version.')
 
 def parseOpts():
        # Deferred imports
        import getpass
        import optparse
+       import shlex
+
+       def _readOptions(filename_bytes):
+               try:
+                       optionf = open(filename_bytes)
+               except IOError:
+                       return [] # silently skip if file is not present
+               try:
+                       res = []
+                       for l in optionf:
+                               res += shlex.split(l, comments=True)
+               finally:
+                       optionf.close()
+               return res
 
        def _format_option_string(option):
                ''' ('-o', '--option') -> -o, --format METAVAR'''
@@ -3522,6 +4285,9 @@ def parseOpts():
        general.add_option('--dump-user-agent',
                        action='store_true', dest='dump_user_agent',
                        help='display the current browser identification', default=False)
+       general.add_option('--list-extractors',
+                       action='store_true', dest='list_extractors',
+                       help='List all supported extractors and the URLs they would handle', default=False)
 
        selection.add_option('--playlist-start',
                        dest='playliststart', metavar='NUMBER', help='playlist video to start at (default is 1)', default=1)
@@ -3529,6 +4295,7 @@ def parseOpts():
                        dest='playlistend', metavar='NUMBER', help='playlist video to end at (default is last)', default=-1)
        selection.add_option('--match-title', dest='matchtitle', metavar='REGEX',help='download only matching titles (regex or caseless sub-string)')
        selection.add_option('--reject-title', dest='rejecttitle', metavar='REGEX',help='skip download for matching titles (regex or caseless sub-string)')
+       selection.add_option('--max-downloads', metavar='NUMBER', dest='max_downloads', help='Abort after downloading NUMBER files', default=None)
 
        authentication.add_option('-u', '--username',
                        dest='username', metavar='USERNAME', help='account username')
@@ -3541,15 +4308,21 @@ def parseOpts():
        video_format.add_option('-f', '--format',
                        action='store', dest='format', metavar='FORMAT', help='video format code')
        video_format.add_option('--all-formats',
-                       action='store_const', dest='format', help='download all available video formats', const='-1')
+                       action='store_const', dest='format', help='download all available video formats', const='all')
+       video_format.add_option('--prefer-free-formats',
+                       action='store_true', dest='prefer_free_formats', default=False, help='prefer free video formats unless a specific one is requested')
        video_format.add_option('--max-quality',
                        action='store', dest='format_limit', metavar='FORMAT', help='highest quality format to download')
+       video_format.add_option('-F', '--list-formats',
+                       action='store_true', dest='listformats', help='list all available formats (currently youtube only)')
 
 
        verbosity.add_option('-q', '--quiet',
                        action='store_true', dest='quiet', help='activates quiet mode', default=False)
        verbosity.add_option('-s', '--simulate',
-                       action='store_true', dest='simulate', help='do not download video', default=False)
+                       action='store_true', dest='simulate', help='do not download the video and do not write anything to disk', default=False)
+       verbosity.add_option('--skip-download',
+                       action='store_true', dest='skip_download', help='do not download the video', default=False)
        verbosity.add_option('-g', '--get-url',
                        action='store_true', dest='geturl', help='simulate, quiet but print URL', default=False)
        verbosity.add_option('-e', '--get-title',
@@ -3563,6 +4336,9 @@ def parseOpts():
        verbosity.add_option('--get-filename',
                        action='store_true', dest='getfilename',
                        help='simulate, quiet but print output filename', default=False)
+       verbosity.add_option('--get-format',
+                       action='store_true', dest='getformat',
+                       help='simulate, quiet but print output format', default=False)
        verbosity.add_option('--no-progress',
                        action='store_true', dest='noprogress', help='do not print progress bar', default=False)
        verbosity.add_option('--console-title',
@@ -3578,15 +4354,18 @@ def parseOpts():
                        action='store_true', dest='autonumber',
                        help='number downloaded files starting from 00000', default=False)
        filesystem.add_option('-o', '--output',
-                       dest='outtmpl', metavar='TEMPLATE', help='output filename template')
+                       dest='outtmpl', metavar='TEMPLATE', help='output filename template. Use %(stitle)s to get the title, %(uploader)s for the uploader name, %(autonumber)s to get an automatically incremented number, %(ext)s for the filename extension, %(upload_date)s for the upload date (YYYYMMDD), and %% for a literal percent. Use - to output to stdout.')
        filesystem.add_option('-a', '--batch-file',
                        dest='batchfile', metavar='FILE', help='file containing URLs to download (\'-\' for stdin)')
        filesystem.add_option('-w', '--no-overwrites',
                        action='store_true', dest='nooverwrites', help='do not overwrite files', default=False)
        filesystem.add_option('-c', '--continue',
                        action='store_true', dest='continue_dl', help='resume partially downloaded files', default=False)
+       filesystem.add_option('--no-continue',
+                       action='store_false', dest='continue_dl',
+                       help='do not resume partially downloaded files (restart from beginning)')
        filesystem.add_option('--cookies',
-                       dest='cookiefile', metavar='FILE', help='file to dump cookie jar to')
+                       dest='cookiefile', metavar='FILE', help='file to read cookies from and dump cookie jar in')
        filesystem.add_option('--no-part',
                        action='store_true', dest='nopart', help='do not use .part files', default=False)
        filesystem.add_option('--no-mtime',
@@ -3603,7 +4382,11 @@ def parseOpts():
        postproc.add_option('--extract-audio', action='store_true', dest='extractaudio', default=False,
                        help='convert video files to audio-only files (requires ffmpeg and ffprobe)')
        postproc.add_option('--audio-format', metavar='FORMAT', dest='audioformat', default='best',
-                       help='"best", "aac" or "mp3"; best by default')
+                       help='"best", "aac", "vorbis", "mp3", "m4a", or "wav"; best by default')
+       postproc.add_option('--audio-quality', metavar='QUALITY', dest='audioquality', default='128K',
+                       help='ffmpeg audio bitrate specification, 128k by default')
+       postproc.add_option('-k', '--keep-video', action='store_true', dest='keepvideo', default=False,
+                       help='keeps the video file on disk after the post-processing; the video is erased by default')
 
 
        parser.add_option_group(general)
@@ -3614,11 +4397,54 @@ def parseOpts():
        parser.add_option_group(authentication)
        parser.add_option_group(postproc)
 
-       opts, args = parser.parse_args()
+       xdg_config_home = os.environ.get('XDG_CONFIG_HOME')
+       if xdg_config_home:
+               userConf = os.path.join(xdg_config_home, 'youtube-dl.conf')
+       else:
+               userConf = os.path.join(os.path.expanduser('~'), '.config', 'youtube-dl.conf')
+       argv = _readOptions('/etc/youtube-dl.conf') + _readOptions(userConf) + sys.argv[1:]
+       opts, args = parser.parse_args(argv)
 
        return parser, opts, args
 
-def main():
+def gen_extractors():
+       """ Return a list of an instance of every supported extractor.
+       The order does matter; the first extractor matched is the one handling the URL.
+       """
+       youtube_ie = YoutubeIE()
+       google_ie = GoogleIE()
+       yahoo_ie = YahooIE()
+       return [
+               YoutubePlaylistIE(youtube_ie),
+               YoutubeUserIE(youtube_ie),
+               YoutubeSearchIE(youtube_ie),
+               youtube_ie,
+               MetacafeIE(youtube_ie),
+               DailymotionIE(),
+               google_ie,
+               GoogleSearchIE(google_ie),
+               PhotobucketIE(),
+               yahoo_ie,
+               YahooSearchIE(yahoo_ie),
+               DepositFilesIE(),
+               FacebookIE(),
+               BlipTVIE(),
+               VimeoIE(),
+               MyVideoIE(),
+               ComedyCentralIE(),
+               EscapistIE(),
+               CollegeHumorIE(),
+               XVideosIE(),
+               SoundcloudIE(),
+               InfoQIE(),
+               MixcloudIE(),
+               StanfordOpenClassroomIE(),
+               MTVIE(),
+
+               GenericIE()
+       ]
+
+def _real_main():
        parser, opts, args = parseOpts()
 
        # Open appropriate CookieJar
@@ -3637,12 +4463,6 @@ def main():
                print std_headers['User-Agent']
                sys.exit(0)
 
-       # General configuration
-       cookie_processor = urllib2.HTTPCookieProcessor(jar)
-       opener = urllib2.build_opener(urllib2.ProxyHandler(), cookie_processor, YoutubeDLHandler())
-       urllib2.install_opener(opener)
-       socket.setdefaulttimeout(300) # 5 minutes should be enough (famous last words)
-
        # Batch file verification
        batchurls = []
        if opts.batchfile is not None:
@@ -3658,6 +4478,23 @@ def main():
                        sys.exit(u'ERROR: batch file could not be read')
        all_urls = batchurls + args
 
+       # General configuration
+       cookie_processor = urllib2.HTTPCookieProcessor(jar)
+       opener = urllib2.build_opener(urllib2.ProxyHandler(), cookie_processor, YoutubeDLHandler())
+       urllib2.install_opener(opener)
+       socket.setdefaulttimeout(300) # 5 minutes should be enough (famous last words)
+
+       extractors = gen_extractors()
+
+       if opts.list_extractors:
+               for ie in extractors:
+                       print(ie.IE_NAME)
+                       matchedUrls = filter(lambda url: ie.suitable(url), all_urls)
+                       all_urls = filter(lambda url: url not in matchedUrls, all_urls)
+                       for mu in matchedUrls:
+                               print(u'  ' + mu)
+               sys.exit(0)
+
        # Conflicting, missing and erroneous options
        if opts.usenetrc and (opts.username is not None or opts.password is not None):
                parser.error(u'using .netrc conflicts with giving username/password')
@@ -3692,50 +4529,26 @@ def main():
        except (TypeError, ValueError), err:
                parser.error(u'invalid playlist end number specified')
        if opts.extractaudio:
-               if opts.audioformat not in ['best', 'aac', 'mp3']:
+               if opts.audioformat not in ['best', 'aac', 'mp3', 'vorbis', 'm4a', 'wav']:
                        parser.error(u'invalid audio format specified')
 
-       # Information extractors
-       youtube_ie = YoutubeIE()
-       google_ie = GoogleIE()
-       yahoo_ie = YahooIE()
-       extractors = [ # Order does matter
-               youtube_ie,
-               MetacafeIE(youtube_ie),
-               DailymotionIE(),
-               YoutubePlaylistIE(youtube_ie),
-               YoutubeUserIE(youtube_ie),
-               YoutubeSearchIE(youtube_ie),
-               google_ie,
-               GoogleSearchIE(google_ie),
-               PhotobucketIE(),
-               yahoo_ie,
-               YahooSearchIE(yahoo_ie),
-               DepositFilesIE(),
-               FacebookIE(),
-               BlipTVIE(),
-               VimeoIE(),
-               MyVideoIE(),
-               ComedyCentralIE(),
-               EscapistIE(),
-
-               GenericIE()
-       ]
-
        # File downloader
        fd = FileDownloader({
                'usenetrc': opts.usenetrc,
                'username': opts.username,
                'password': opts.password,
-               'quiet': (opts.quiet or opts.geturl or opts.gettitle or opts.getthumbnail or opts.getdescription or opts.getfilename),
+               'quiet': (opts.quiet or opts.geturl or opts.gettitle or opts.getthumbnail or opts.getdescription or opts.getfilename or opts.getformat),
                'forceurl': opts.geturl,
                'forcetitle': opts.gettitle,
                'forcethumbnail': opts.getthumbnail,
                'forcedescription': opts.getdescription,
                'forcefilename': opts.getfilename,
-               'simulate': (opts.simulate or opts.geturl or opts.gettitle or opts.getthumbnail or opts.getdescription or opts.getfilename),
+               'forceformat': opts.getformat,
+               'simulate': opts.simulate,
+               'skip_download': (opts.skip_download or opts.simulate or opts.geturl or opts.gettitle or opts.getthumbnail or opts.getdescription or opts.getfilename or opts.getformat),
                'format': opts.format,
                'format_limit': opts.format_limit,
+               'listformats': opts.listformats,
                'outtmpl': ((opts.outtmpl is not None and opts.outtmpl.decode(preferredencoding()))
                        or (opts.format == '-1' and opts.usetitle and u'%(stitle)s-%(id)s-%(format)s.%(ext)s')
                        or (opts.format == '-1' and opts.useliteral and u'%(title)s-%(id)s-%(format)s.%(ext)s')
@@ -3762,13 +4575,15 @@ def main():
                'writeinfojson': opts.writeinfojson,
                'matchtitle': opts.matchtitle,
                'rejecttitle': opts.rejecttitle,
+               'max_downloads': opts.max_downloads,
+               'prefer_free_formats': opts.prefer_free_formats,
                })
        for extractor in extractors:
                fd.add_info_extractor(extractor)
 
        # PostProcessors
        if opts.extractaudio:
-               fd.add_post_processor(FFmpegExtractAudioPP(preferredcodec=opts.audioformat))
+               fd.add_post_processor(FFmpegExtractAudioPP(preferredcodec=opts.audioformat, preferredquality=opts.audioquality, keepvideo=opts.keepvideo))
 
        # Update version
        if opts.update_self:
@@ -3780,7 +4595,12 @@ def main():
                        parser.error(u'you must provide at least one URL')
                else:
                        sys.exit()
-       retcode = fd.download(all_urls)
+       
+       try:
+               retcode = fd.download(all_urls)
+       except MaxDownloadsReached:
+               fd.to_screen(u'--max-download limit reached, aborting.')
+               retcode = 101
 
        # Dump cookie jar if requested
        if opts.cookiefile is not None:
@@ -3791,10 +4611,9 @@ def main():
 
        sys.exit(retcode)
 
-
-if __name__ == '__main__':
+def main():
        try:
-               main()
+               _real_main()
        except DownloadError:
                sys.exit(1)
        except SameFileError:
@@ -3802,4 +4621,7 @@ if __name__ == '__main__':
        except KeyboardInterrupt:
                sys.exit(u'\nERROR: Interrupted by user')
 
+if __name__ == '__main__':
+       main()
+
 # vim: set ts=4 sw=4 sts=4 noet ai si filetype=python: