# New MP4 Field Requests ©dir and ©wrt

**URL:** https://community.mp3tag.de/t/new-mp4-field-requests-dir-and-wrt/70665
**Category:** Support
**Created:** [February 11, 2026, 4:35am UTC](https://community.mp3tag.de/t/new-mp4-field-requests-dir-and-wrt/70665 "2026-02-11T04:35:16Z")
**Posts on this page:** 1
**Showing post:** 40

<div class="post-metadata">

### Author: ![arb](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/a/41988e/32.png) [@arb](https://community.mp3tag.de/u/arb)
#### Post date: [February 13, 2026, 6:42pm UTC](https://community.mp3tag.de/t/new-mp4-field-requests-dir-and-wrt/70665/40 "2026-02-13T18:42:40Z")

</div>

So here’s the low-down:

- Sadly, it’s unlikely Plex is going to add further support for [MP4 tags/atoms/whatever](https://www.reddit.com/r/PleX/comments/1i26opa/guidance_on_compatibility_with_mp4_tags/) so fields like `DIRECTOR` `©dir` aren’t going to work, no matter what changes are made to Mp3Tag or any other editing software.
- That doesn’t mean you can’t use `DIRECTOR` in your workflow to get what you want working in Plex, though…
- [Check this out](https://forums.plex.tv/t/what-mp4-tags-can-be-read-into-plex-with-local-assets-agent/131506/16): Apple and Plex **can** read cast, directors, producers, screen-writers and copyright from a local file using an external XML file called ITUNMOVI like what @AreDigg has shown.
- [Here’s the best bit](https://www.reddit.com/r/PleX/comments/1e94ln1/home_movies_adding_family_members_as_actors/): instead of an external file, Apple and Plex can actually read it from inside an MP4 using a custom `ITUNMOVI` tag you can set with Mp3Tag.
- If you have iTunes or Apple TV installed, you can copy-paste an example of a whole XML into an `ITUNMOVI` tag then import an MP4 to prove it works before attempting with Plex again.
- I don’t use Plex so admittedly I can’t guarantee it’ll work but check things like you have the [Local Media Assets agents](https://support.plex.tv/articles/200220677-local-media-assets-movies/) enabled and doing [The Plex Dance ™](https://forums.plex.tv/t/the-plex-dance/197064). I’m also uncertain if it’ll show up in Plex’s own metadata editor but that’s not too bad a problem.

**Hopefully** by now it’s working but obviously it’s a hassle trying to edit multiple fields in an XML for however many files. When the time comes and you’re ready, I made _this_ bad boy:

[Create iTunMOVI.mta](https://community.mp3tag.de/uploads/short-url/elrAYlfy4JBEyKNq6VYnazaGs7E.mta) (2.1 KB)

- [Refer to this](https://community.mp3tag.de/t/freedb-and-web-sources/2748/4) to install the action into the `\Mp3tag\data\actions` folder.
- In Mp3Tag, save what you want into `ACTOR`, `DIRECTOR`, `PRODUCER`, `WRITER` and `COPYRIGHT` tags into an MP4 (`ACTOR` is based on an MKV tag and `WRITER` is totally custom.)
- With the MP4 selected, run that action and it’ll create `ITUNMOVI` using the values of those tags for you. Double-check with Extended Tags and maybe even set up a wee Column value or a Tag Panel field using `%itunmovi%` so it’s easier to check.
- If you need to refresh an `ITUNMOVI` tag, delete it from your file and run the action again.
- If you want to change what tags are used (something like `CAST` or `WRITTEN_BY`), we can help you set that up 😬

---

_[View the full topic](https://community.mp3tag.de/t/new-mp4-field-requests-dir-and-wrt/70665)._