MP3

• avconv MP3 muxer - documentation on metadata

Strip an MP3 of all metadata:

avconv -i source.mp3 -write_xing 0 -id3v2_version 0 -map_metadata -1 -acodec copy no_metadata.mp3

See here for documentation of mapping tags using avconv.

Set metadata title:

avconv -i source.mp3 -id3v2_version 3 -metadata title="Highway to Danger" -acodec copy title.mp3

Set title, album, artist, track number:

avconv -i source.mp3 -id3v2_version 3 -metadata title="Highway to Danger" -metadata artist="Knight Rider" -metadata album="Read Along Books" -metadata track=1 -acodec copy metadata.mp3