# Mp3tag v3.07 released
**URL:** https://community.mp3tag.de/t/mp3tag-v3-07-released/53294
**Category:** Announcements
**Created:** [May 21, 2021, 10:12am UTC](https://community.mp3tag.de/t/mp3tag-v3-07-released/53294 "2021-05-21T10:12:09Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [May 21, 2021, 10:12am UTC](https://community.mp3tag.de/t/mp3tag-v3-07-released/53294/1 "2021-05-21T10:12:09Z")
# Mp3tag v3.07 released
I'm happy to release this new version. It fixes two issues that haunted me over months (even years) and with the help of this community, I was able to finally resolve those.
The new version also comes with some other and nice improvements and I want to take the opportunity to detail some of the new features and changes for you.
### Support for editing cover art for Matroska MKA/MKV
This took some time and Mp3tag is finally able to also edit (and not only display) cover art for Matroska MKA/MKV files. Matroska is one of the most complex tagging specs I've worked with, so I'm especially happy that editing image attachments to the container is now possible.
### Support for WebP image format
The [WebP image format](https://developers.google.com/speed/webp) is by no means standard at this point. The recommended formats for embedded cover art are still JPG and PNG. However, many online sources and people are using this modern image format and I wanted to at least give the option with Mp3tag. You can even use Mp3tag to convert from WebP to JPG or PNG. A modern and recommended player with WebP support is [foobar2000](https://www.foobar2000.org/).
### Support for iTunes and Apple Music related MP4 fields
I've extended the list of [supported MP4 metadata fields that are related to iTunes and Apple Music](https://docs.mp3tag.de/mapping/#tag-fields-exclusive-to-mp4):
- ITUNESALBUMID (`plID`)
- ITUNESARTISTID (`atID`)
- ITUNESCOMPOSERID (`cmID`)
- ITUNESCOUNTRYID (`sfID`)
- ITUNESGENREID (`geID`)
- XID (`xid `)
### ๐ Download the new version
[https://www.mp3tag.de/en/download.html](https://www.mp3tag.de/en/download.html)
### ๐งก Support my work as an Indie Developer
[https://www.mp3tag.de/en/donations.html](https://www.mp3tag.de/en/donations.html)
As always, thank you for reading, your interest and your support.
Enjoy and take care
โ Florian
#### Additional Features and Fixes
> **Click here to expand**
>
> ### New Features
>
> - added support for editing cover art for Matroska MKA/MKV tags. ([#12641](https://community.mp3tag.de/t/12641), [#18518](https://community.mp3tag.de/t/18518), [#19588](https://community.mp3tag.de/t/19588), [#19599](https://community.mp3tag.de/t/19599), [#40845](https://community.mp3tag.de/t/40845), [#40859](https://community.mp3tag.de/t/40859), [#40883](https://community.mp3tag.de/t/40883), [#41895](https://community.mp3tag.de/t/41895), [#46630](https://community.mp3tag.de/t/46630), [#50619](https://community.mp3tag.de/t/50619))
> - added support for MP4 fields `ITUNESALBUMID`, `ITUNESARTISTID`, `ITUNESCOMPOSERID`, `ITUNESCOUNTRYID`, `ITUNESGENREID`, and `XID`. ([#43189](https://community.mp3tag.de/t/43189), [#48614](https://community.mp3tag.de/t/48614), [#51715](https://community.mp3tag.de/t/51715), [#52610](https://community.mp3tag.de/t/52610))
> - added support for WebP images for cover art. ([#51592](https://community.mp3tag.de/t/51592))
> - added advanced tagging option to always display `POPULARIMETER` field for ID3v2 rating instead of app-specific convenience fields. ([#11847](https://community.mp3tag.de/t/11847))
> - added option to configure the image quality when resizing cover art via 'Adjust cover'. ([#50623](https://community.mp3tag.de/t/50623))
>
> ### Changes
>
> - not using ID3v2 unsynchronization scheme anymore when writing ID3v2.4 due to compatibility reasons with apps that don't implement the standard.
> - removing Matroska segment title if it differs from global tag title.
> - using special filenames `cover` and `back` for front and back covers at Matroska attachments. ([#19599](https://community.mp3tag.de/t/19599))
> - creating multiple fields using the multiple fields delimiter `\\` via replace or other actions was not possible. ([#52862](https://community.mp3tag.de/t/52862))
> - added `POPULARIMETER` and `RATING` to list of standard fields. ([#14581](https://community.mp3tag.de/t/14581))
> - re-added `ACOUSTID_FINGERPRINT` to list of standard fields on new installations or field-list reset. ([#52570](https://community.mp3tag.de/t/52570))
> - updated Brazilian Portuguese, Czech, Finnish, Italian, Portuguese, Swedish, and Turkish translation.
>
> ### Bug Fixes
>
> - layout problem where dropdown fields on Tag Panel were sometimes partially hidden behind vertical scrollbar. ([#44693](https://community.mp3tag.de/t/44693), [#48749](https://community.mp3tag.de/t/48749), [#52556](https://community.mp3tag.de/t/52556), [#52601](https://community.mp3tag.de/t/52601))
> - occasional crash after using the extended tag dialog due to heap corruption. ([#52713](https://community.mp3tag.de/t/52713))
> - drawing artifacts when resizing columns and splitter at tag-sources results. ([#52479](https://community.mp3tag.de/t/52479))
> - occasional cannot write to file error when editing tags via navigation in the file list (since v3.05a).
> - regression to a possible runtime error when running actions that result in empty fields (since v3.05f).
> - sorting tag-sources result by length did not work correctly if length column exceeded the one hour mark. ([#52928](https://community.mp3tag.de/t/52928))
> - suggest sorting of tag-sources result by length was still flaky. ([#52928](https://community.mp3tag.de/t/52928))
---
### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [July 23, 2021, 11:28am UTC](https://community.mp3tag.de/t/mp3tag-v3-07-released/53294/4 "2021-07-23T11:28:30Z")