codem-isoboxer
A lightweight JavaScript MP4 (MPEG-4, ISOBMFF) file/box parser.
isotools
This lib implements part of `ISO/IEC 14496-12 2015`, which is the specification for ISO Base Media File Format, a media container used my many file formats, including mp4.
mse-audio-wrapper
Library to enable Media Source Extensions API playback for unsupported audio containers and raw codecs