# MKVToolNix v101.0 released

**URL:** <https://help.mkvtoolnix.download/t/mkvtoolnix-v101-0-released/1594>\
**Category:** Announcements\
**Created:** [August 24, 2026, 7:43pm UTC](https://help.mkvtoolnix.download/t/mkvtoolnix-v101-0-released/1594 "2026-08-24T19:43:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![mbunkus](https://help.mkvtoolnix.download/user_avatar/help.mkvtoolnix.download/mbunkus/32/11_2.png) [@mbunkus](https://help.mkvtoolnix.download/u/mbunkus)\
**Post date:** [August 24, 2026, 7:43pm UTC](https://help.mkvtoolnix.download/t/mkvtoolnix-v101-0-released/1594/1 "2026-08-24T19:43:00Z")

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Hey y’all!

The first release after the milestone round version v100 is here, v101. It’s pretty small, but I still suggest everyone update due to the inclusion of updated underlying libraries libEBML & libMatroska. Both are updated to their respective releases from a couple of weeks ago which fix several potential invalid memory access cases that could be triggered by reading files broken in very rare, specific ways. Basically they’re potentially security-relevant.

You can download the [source code](https://mkvtoolnix.download/source.html) or [one of the packages](https://mkvtoolnix.download/downloads.html). The Windows packages as well as the Linux AppImage are available already. The other Linux packages & the macOS disk image are still being built and will be available over the course of the next couple of hours.

Here are the [NEWS](https://mkvtoolnix.download/doc/NEWS.md) since the previous release:

## Version 101.0 “Time To Turn” 2026-08-24

### New features and enhancements

- translations: substantial extension of the Czech translation by Michal Várady.

### Bug fixes

- mkvmerge: TrueHD parser: fixed mkvmerge dropping the last TrueHD frame if its size was smaller than 12 bytes. Fixes [#6296](https://codeberg.org/mbunkus/mkvtoolnix/issues/6296).
- MKVToolNix GUI: job runner: the variable `<MTX_INSTALLATION_DIRECTORY>` will be replaed in the executable position of the command-line for the program to execute again. Fixes [#6299](https://codeberg.org/mbunkus/mkvtoolnix/issues/6299).
- Windows: fixed converting the scalable SVG icons into the bitmap `.ico` ones used on Windows so that the grey background remains uniform & doesn’t get garbled. Fixes [#6280](https://codeberg.org/mbunkus/mkvtoolnix/issues/6280).

### Build system changes

- The bundled libraries libEBML & libMatroska were updated to v1.4.7 & v1.7.2 respectively. Those versions fix various possible invalid memory accesses when reading data broken in certain, very specific ways, making them security sensitive.
- libEBML v1.4.7 & libMatroska v1.7.2 are now required.
- The meta info file `org.bunkus.mkvtoolnix-gui.appdata.xml` was renamed to `org.bunkus.mkvtoolnix-gui.metainfo.xml`.

Have fun! 💝😁

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<div class="post-metadata">

**Author:** ![mbunkus](https://help.mkvtoolnix.download/user_avatar/help.mkvtoolnix.download/mbunkus/32/11_2.png) [@mbunkus](https://help.mkvtoolnix.download/u/mbunkus)\
**Post date:** [August 24, 2026, 7:43pm UTC](https://help.mkvtoolnix.download/t/mkvtoolnix-v101-0-released/1594/2 "2026-08-24T19:43:24Z")

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<div class="post-metadata">

**Author:** ![mbunkus](https://help.mkvtoolnix.download/user_avatar/help.mkvtoolnix.download/mbunkus/32/11_2.png) [@mbunkus](https://help.mkvtoolnix.download/u/mbunkus)\
**Post date:** [October 19, 2026, 7:21am UTC](https://help.mkvtoolnix.download/t/mkvtoolnix-v101-0-released/1594/3 "2026-10-19T07:21:19Z")

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