Add support for vorbis files to --extract-audio

Add Ogg Vorbis as a file type when extracting the audio from a
file.  This can be the 'best' codec if the source clip is a webm
container.

diff --git a/youtube-dl b/youtube-dl
index 02c31e4..0e7f5d6 100755 (executable)
--- a/youtube-dl
+++ b/youtube-dl
@@ -3351,12 +3351,14 @@ class FFmpegExtractAudioPP(PostProcessor):
 
                more_opts = []
                if self._preferredcodec == 'best' or self._preferredcodec == filecodec:
-                       if filecodec == 'aac' or filecodec == 'mp3':
+                       if filecodec == 'aac' or filecodec == 'mp3' or filecodec == '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'
@@ -3366,13 +3368,15 @@ class FFmpegExtractAudioPP(PostProcessor):
                                        more_opts += ['-ab', self._preferredquality]
                else:
                        # We convert the audio (lossy)
-                       acodec = {'mp3': 'libmp3lame', 'aac': 'aac'}[self._preferredcodec]
+                       acodec = {'mp3': 'libmp3lame', 'aac': 'aac', 'vorbis': 'libvorbis'}[self._preferredcodec]
                        extension = self._preferredcodec
                        more_opts = []
                        if self._preferredquality is not None:
                                more_opts += ['-ab', self._preferredquality]
                        if self._preferredcodec == 'aac':
                                more_opts += ['-f', 'adts']
+                       if self._preferredcodec == 'vorbis':
+                               extension = 'ogg'
 
                (prefix, ext) = os.path.splitext(path)
                new_path = prefix + '.' + extension
@@ -3600,7 +3604,7 @@ 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" or "mp3"; 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,
@@ -3734,7 +3738,7 @@ 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']:
                        parser.error(u'invalid audio format specified')
 
        # File downloader