MP4AddODTrack adds an object descriptor (aka OD) track to the mp4 file. MP4WriteSample() can then be used to add the desired OD commands to the track. The burden is currently on the calling application to understand OD. Those wishing to have a simple audio/video scene without understanding OD may wish to use MP4MakeIsmaCompliant() to create the minimal OD and BIFS information.
This is a simple Python module for retrieving and setting so-called ID3 tags on audio files through an object-oriented interface. Players generally use this simple information for display track title, artist name, and album title while playing the sound file.