--audio-quality QUALITY ffmpeg/avconv audio quality specification, insert a
value between 0 (better) and 9 (worse) for VBR or a
specific bitrate like 128K (default 5)
+ --recode-video FORMAT Encode the video to another format if necessary
+ (currently supported: mp4|flv|ogg|webm)
-k, --keep-video keeps the video file on disk after the post-
processing; the video is erased by default
--no-post-overwrites do not overwrite post-processed files; the post-