# MP3Tag Unable To Edit Tags On File?
**URL:** https://community.mp3tag.de/t/mp3tag-unable-to-edit-tags-on-file/68142
**Category:** Support
**Created:** [April 9, 2025, 2:48am UTC](https://community.mp3tag.de/t/mp3tag-unable-to-edit-tags-on-file/68142 "2025-04-09T02:48:05Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@TheMystique](https://community.mp3tag.de/u/TheMystique)
#### Post date: [April 9, 2025, 2:48am UTC](https://community.mp3tag.de/t/mp3tag-unable-to-edit-tags-on-file/68142/1 "2025-04-09T02:48:05Z")
MP3Tag has worked super well for lots of shows I've obtained and needed to sort in Windows Explorer by methods other than filename. For instance "Toucan" comes after "Apple" alphabetically but I wanted Toucan first, so in MP3Tag I would take Toucan and in the Album column, Tag it 1 and Apple 2, and then in Windows Explorer "Sort by Album" and it would work fine. Toucan would come first.
However today it's just stopped working, slightly. I have a bunch of episodes of a show it did work on, but then I obtained the movie for the show from a separate place, and they're all .mkv files, but when I load the movie into MP3Tag and tag it as "149" (to mark it being 149th in line) in the Album section-- Even though MP3Tag does save this tag configuration and allow it to be sorted properly within MP3Tag's program itself-- When I go back to Windows and "Sort By Album" it just doesn't work for the movie. It's like it didn't recognize what MP3Tag did.
Which I believe is exactly what happened because instead of "Sort By" if I go to "Group By Album" it'll show me all the tags I applied for the episodes, but then the movie is at the very bottom and instead of "149" it says "Unspecified" so I have no idea what's up, but hopefully this explanation wasn't too confusing, and any help is appreciated. I can provide images if needed.
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### Author:  [@poster](https://community.mp3tag.de/u/poster)
#### Post date: [April 9, 2025, 5:04am UTC](https://community.mp3tag.de/t/mp3tag-unable-to-edit-tags-on-file/68142/2 "2025-04-09T05:04:05Z")
Have a look at this thread:
> [@MKV-"Title"Tag Bug in 3.29](https://community.mp3tag.de/t/mkv-title-tag-bug-in-3-29/68058):
>
> The "Title"-Tag in MKV-Files gets bugged out if changed in v3.29. VLC will never show a "Title"-Tag written with v3.29 and will instead show the filename with its extension. Previous Mp3Tag versions will fix it. I tested this with versions 3.21b and 3.28.
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### Author:  [@BlackFirePhenex](https://community.mp3tag.de/u/BlackFirePhenex)
#### Post date: [April 9, 2025, 9:13am UTC](https://community.mp3tag.de/t/mp3tag-unable-to-edit-tags-on-file/68142/3 "2025-04-09T09:13:13Z")
I have been summoned!
TLDR: The creator changed the program to adhere to the mkv specifications. VLC and probably some other programs aren't doing that. To fix this compatibility issue a beta or alpha version of MP3Tag was created and linked.
Here is the link to the Post of the Developer:
> [@MKV-"Title"Tag Bug in 3.29](https://community.mp3tag.de/t/mkv-title-tag-bug-in-3-29/68058/15):
>
> Many thanks for your feedback! I've just released [Mp3tag v3.29a](https://community.mp3tag.de/t/455) which introduces an option for video-specific mappings for Matroska video via Options → Tags → Advanced. This is to increase compatibility with apps that, e.g., only read TITLE with target type T=30. @BlackFirePhenex, if you disable this option, Mp3tag should write TITLE as in v3.28 so that VLC and any other app that requires the track-level target-types can read and display the title.
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### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [May 9, 2025, 9:14am UTC](https://community.mp3tag.de/t/mp3tag-unable-to-edit-tags-on-file/68142/4 "2025-05-09T09:14:01Z")
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