MKVToolNix v97.0 released

[Mosu]

Originally Posted by jpsdr

@Mosu
Hi.
There is the 95.0.38 in https://mkvtoolnix.download/windows/...s/32-bit/95.0/, but not in https://mkvtoolnix.download/windows/...s/64-bit/95.0/. Is it normal ?

That's due to an installation issue on my buildbot server which clashes with the recent change to how the 64-bit installer is built. It'll be fixed soon-ish.

[Mosu]

Problem's fixed, and the missing build has been built.

[jpsdr]

Nice, thanks.

[Mosu]

Heyooo.

Here's the latest, the greatest (maybe?) release of MKVtoolNix, v96.0. Business as usual: couple of enhancements, couple of bug fixes.

Here are the usual links: the MKVToolNix home page, the downloads section and the source code.

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 since the previous release:

Version 96.0 "It's My Life" 2025-11-08
New features and enhancements

• all programs: added a command-line parameter "--no-bom" that disables writing byte order marks to text files encoded with one of the UTF variants. Implements #6166.
• MKVToolNix GUI: multiplexer: added variable "<MTX_CHAPTERS_FILE_NAME>" to the "run program after job completion" mechanism containing the absolute path to the chapters file name. Implements #6172.

Bug fixes

• mkvmerge: OBU reader: fixed probing files in which the first frame ends after the 1MB mark, which is how big the memory buffer used for probing content is. Fixes #6165.
• mkvmerge: VobSub reader: VobSub ".idx" files that start with a byte-order mark (BOM) are now read again correctly. Fixes #6162.
• mkvextract: AV1/IVF: fixed inserting a temporal delimiter OBU at the start of each frame if there is none. Mostly fixes #6120.
• mkvextract: AV1/IVF: fixed a potential calculation error when deriving frame rate numerator & denominator from Matroska's default duration. Part of the fix of #6120.
• mkvextract: AV1/IVF: fixed calculation of IVF frame number calculation from Matroska's frame timestamps by rounding instead of truncating. Part of the fix of #6120.

Have fun 😁

[Klaus1189]

Thanks for new release, but while installation of x64 on Win11 I do not get asked for admin rights to install and therefore install fails. If I rightclick the installer and run it with admin rights, it works. Is that just me or can you confirm that?

[LeMoi]

Originally Posted by Klaus1189

Thanks for new release, but while installation of x64 on Win11 I do not get asked for admin rights to install and therefore install fails. If I rightclick the installer and run it with admin rights, it works. Is that just me or can you confirm that?

No problem here win WIN11 too to install without specifiying admin rights

[Klaus1189]

I retested 95.0.0 which works without manual admin rights and 96.0.0 which does not.

[Mosu]

I have another user reporting the same kind of issue over on the forum. Note that I'm using a different/new NSIS build so that I can actually build 64-bit installer executables instead of 32-bit ones. You'll get used to it. Other programs do it that way, too.

What I find interesting, though, is that I personally get asked for admin privs immediately upon launching the installer without having to tell Windows so explicitly, like LeMoi, too. I do not know why, nor do I care to investigate, to be quite honest.

[Klaus1189]

If it helps, Win 11 25H2, fresh new install about 2 weeks ago. If you reconsider, just let me know. I will provide as much info as I can. I am also here for tests.

[SeeMoreDigital]

When trying to instal 'mkvtoolnix-64-bit-96.0-setup.exe' I receive the following message even after deleting mkvtoolnix first: -

[Mosu]

Run the installer with admin privileges.

[Klaus1189]

Yes, exact same issue

[Mosu]

Originally Posted by Klaus1189

If it helps, Win 11 25H2, fresh new install about 2 weeks ago. If you reconsider, just let me know. I will provide as much info as I can. I am also here for tests.

You can give https://mkvtoolnix.download/windows/...est build here a try. I've changed

RequestExecutionLevel none

to

RequestExecutionLevel admin

. Funnily enough I had used "admin" in the past, but changed it to "none" in 2010 — unfortunately without any explanation in the commit message. I vaguely remember users requesting I do this, but I do not remember their reasoning.

[SeeMoreDigital]

Originally Posted by Mosu

Run the installer with admin privileges.

Yes, I actually ended up doing this. Sorry I neglected to mention it in my previous post.

[Klaus1189]

Originally Posted by Mosu

You can give https://mkvtoolnix.download/windows/...est build here a try. I've changed

RequestExecutionLevel none

to

RequestExecutionLevel admin

. Funnily enough I had used "admin" in the past, but changed it to "none" in 2010 — unfortunately without any explanation in the commit message. I vaguely remember users requesting I do this, but I do not remember their reasoning.

https://mkvtoolnix.download/windows/...1908-setup.exe

This build askes me for admin rights

[lansing]

I was muxing vob files into a mkv but the length doesn't match with the dgindex I created with the same vobs. It looks like mkvtoolnix added 7 frames to each vob except for the first one? I'm using version 96.0

[SeeMoreDigital]

Originally Posted by lansing

I was muxing vob files into a mkv but the length doesn't match with the dgindex I created with the same vobs. It looks like mkvtoolnix added 7 frames to each vob except for the first one? I'm using version 96.0

As a test... Have you tried joining the vob files together using TSmuxer GUI?

[Mosu]

Hi fine folks!

Happy new year everyone. Here's v97.0 of MKVToolNix, probably the smallest release I've ever done with just two NEWS.md entries. But I like to keep up with my ususal schedule, so here we are. Feel free to skip this release if the feature mentioned below is irrelevant for you.

An important note for macOS users: I will stop providing macOS binaries and any kind of support for macOS in the second half of 2026 due to Apple discontinuing support for the Rosetta x86-to-ARM translation system. As my current build process only works on x86 (Intel) macs this will be the end of the line for any kind of mac support for me.

Here are the usual links: the MKVToolNix home page, the downloads section and the source code.

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 since the previous release:

Version 97.0 "You Don't Have A Clue" 2026-01-02
New features and enhancements

• mkvmerge: MP4 reader: added support for TrueHD in MP4 with FourCC "mlpa". Implements #6178.
• installer: the Windows installer will request admin permissions again, as it did before release 96.0.

Have fun 😁