Having worked with some MP4 demuxing for my extension [1], I feel the pain. Lots of times I would play the video only to find inexplicable issues such as drifti

Having worked with some MP4 demuxing for my extension [1], I feel the pain. Lots of times I would play the video only to find inexplicable issues such as drifting audio. I highly recommend using an mp4 inspector tool, such as mp4box [2], to debug these issues. 1: https://github.com/Andrews54757/FastStream https://github.com/Andrews54757/FastStream 2: https://gpac.github.io/mp4box.js/test/filereader.html https://gpac.github.io/mp4box.js/test/filereader.html