in which box the only video track data and autdio track is stored on mpeg 4 file structure?
What data in an mp4 file does ffprobe need to recover duration?
How to locate the intra dct Coefficient in blocks of mpeg-4 visual stream?
Extracting I frames & DC coefficents
Can you find key frame (I-frame) in h264 video without decoding? i.e. is it in packet?
About MPEG-4 headers
MPEG4 AVC header size?