The video track of a read MP4, or a refusal: a container the reader can read but that holds no vide track is not a video. This is the one place the "main video track" rule lives; every caller that reads a picked video's facts goes through it.
vide
The video track of a read MP4, or a refusal: a container the reader can read but that holds no
videtrack is not a video. This is the one place the "main video track" rule lives; every caller that reads a picked video's facts goes through it.