How to reproduce:

MP4box -itags media=9 test.mp4

MP4box -info test.mp4 shows tag "media" has value 57

This seems to happen to all integer types (also hdvd or rating) and basically adds 48 to every value (ie writing value 1 records 49)
MP4Box itags integer values wrongly recorded
This is a GitHub Issue
repo:gpac
owner:gpac
Title : MP4Box itags integer values wrongly recorded
Issue date:

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How to reproduce:

MP4box -itags media=9 test.mp4

MP4box -info test.mp4 shows tag "media" has value 57

This seems to happen to all integer types (also hdvd or rating) and basically adds 48 to every value (ie writing value 1 records 49)
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None