Lotta new MP4 Tags from Apple

Started by Neal Krawetz, March 13, 2025, 03:53:57 PM

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Neal Krawetz

March 13, 2025, 03:53:57 PM
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
...

Phil Harvey

#1
March 17, 2025, 09:40:39 AM
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
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux/PowerShell, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).

Phil Harvey

#2
March 24, 2025, 08:55:39 AM
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
...where DIR is the name of a directory/folder containing the images.  On Mac/Linux/PowerShell, use single quotes (') instead of double quotes (") around arguments containing a dollar sign ($).
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