To package a MPEG-4 Video
Wrap up the raw H.264 video along with chapters inside a MPEG-4 container.
MP4Box -add video.264 -chap chapters.txt -fps 23.976 film.m4v
To Find Info on the First Track inside a .M4V file
MP4Box -info 1 movie.m4v
To Extract H.264 Video from a .M4V file
MP4Box -raw 1 movie.m4v
To Extract AAC audio from M4A file
Use MP4Box to extract AAC audio from a .M4A file like this:
MP4Box -raw 1 music.m4a
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