Mosu
25th August 2026, 09:11
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.
Here are the usual links: the MKVToolNix home page (https://mkvtoolnix.download/), the downloads section (https://mkvtoolnix.download/downloads.html) and the source code (https://mkvtoolnix.download/source.html).
The Windows packages and 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! 💝😁
PS: posting in a new thread as it's that time of the decade again — the previous post's title cannot be edited anymore. This has happened before, after roughly eight years of thread age the title refuses to be updated.
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.
Here are the usual links: the MKVToolNix home page (https://mkvtoolnix.download/), the downloads section (https://mkvtoolnix.download/downloads.html) and the source code (https://mkvtoolnix.download/source.html).
The Windows packages and 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! 💝😁
PS: posting in a new thread as it's that time of the decade again — the previous post's title cannot be edited anymore. This has happened before, after roughly eight years of thread age the title refuses to be updated.