codem-isoboxer
A lightweight JavaScript MP4 (MPEG-4, ISOBMFF) file/box parser.
soundmanager2
A JavaScript Sound API supporting MP3, MPEG4 and HTML5 audio + RTMP, providing reliable cross-browser/platform audio control in as little as 12 KB.
mse-audio-wrapper
Library to enable Media Source Extensions API playback for unsupported audio containers and raw codecs
bento4
Full-featured MP4 format and MPEG DASH library and tools