Undefined array key

[QuixThe2nd]

Im getting the following errors:
Undefined array key 5
Undefined array key 6
on line 1702 of getID3/module.audio-video.quicktime.php

PHP Version: 8.0.14

File: https://starfiles.co/file/nT77EjZPL3Nb/cool-mov

[StudioMaX]

What value is in getID3::VERSION?
I don't see any warnings with this file on PHP 8.0/8.1.

[QuixThe2nd]

1.9.21-202201031158

[JamesHeinrich]

The line in question is this:
$atom_structure['key_name'] = @$info['quicktime']['temp_meta_key_names'][$metaDATAkey++];
If I remove the error-suppressing @ then I do also get the same undefined-array-key notices.
I also tested this file on PHP v8.0.11 and didn't get any warnings with the @ in place, but I have changed to a more explicit check in 2279f7c

[StudioMaX]

Just wanted to opine that I didn't see any warnings at this line on PHP 8.0/8.1 either, even under xdebug. And I'm even wondering how this warning appeared by ignoring @.