# MP4 Publisher compatibility

**URL:** <https://community.mp3tag.de/t/mp4-publisher-compatibility/56000>\
**Category:** Support\
**Created:** [January 22, 2022, 4:00pm UTC](https://community.mp3tag.de/t/mp4-publisher-compatibility/56000 "2022-01-22T16:00:15Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![AreDigg](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/a/bbe5ce/32.png) [@AreDigg](https://community.mp3tag.de/u/AreDigg)\
**Post date:** [January 10, 2024, 12:10am UTC](https://community.mp3tag.de/t/mp4-publisher-compatibility/56000/3 "2024-01-10T00:10:21Z")

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Only `©pub` is the correct iTunes tag, musicbee, foobar2000 and others do not support the tag but add the “Freeform” variant which is a sort of backup. You should ask the developers of the other software to add support for the tag, so it will be cohesive.

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_[View the full topic](https://community.mp3tag.de/t/mp4-publisher-compatibility/56000)._