- ffmpeg and ffprobe)
- --audio-format FORMAT "best", "aac", "vorbis" or "mp3"; best by default
- --audio-quality QUALITY ffmpeg audio bitrate specification, 128k by default
+ ffmpeg or avconv and ffprobe or avprobe)
+ --audio-format FORMAT "best", "aac", "vorbis", "mp3", "m4a", or "wav";
+ best by default
+ --audio-quality QUALITY ffmpeg/avconv audio bitrate specification, 128k by
+ default