https://developer.apple.com/documentation/quicktime-file-format/media_data_reference_atom
A whole bunch of new mp4 atoms from Apple.
I'm seeing a few of them in new videos.
clip, crgn -- clipping and clipping region
ctab -- color table
ftab, styl, tbox -- subtitle font table, style, and text box
...
Thanks. Some of these are already supported, and I don't have examples myself for some of them, but I'll look into this.
- Phil
I'll add a few of these that I'm confident in decoding, but for some others I'll wait until I can verify the format with test samples.
- Phil