MKVToolNix v26.0.0 released


time for another release of MKVToolNix, v26.0.0. It’s on the smaller side regarding the number of changes.

You can download the source code or one of the binaries. The Windows and macOS binaries as well as the Linux AppImage are available already. The other Linux binaries are stil being built and will be available of the course of the next couple of hours.

Here are the NEWS since the previous release:

New features and enhancements

  • mkvmerge: chapter generation: if the name template given by
    --generate-chapters-name-template is empty, no names (ChapterDisplay
    master elements with ChapterString/ChapterLanguage children) will be
    generated for the chapter atoms. Part of the implementation of #2275.
  • mkvmerge: chapters: chapter names generated from MPLS files will now use the
    name template if one is set via --generate-chapters-name-template. Part of
    the implementation of #2275.
  • mkvmerge: mkvmerge will no longer abort with an error message if no audio,
    video and subtitle tracks should be multiplexed. This allows copying of
    chapters from non-chapter source files (e.g. Matroska or MP4 files).
  • MKVToolNix GUI: the font size in the tool selector on the left will scale
    with the font size the user selects in the preferences.
  • MKVToolNix GUI: the GUI will no longer automatically resize the columns in
    tree and list views to match the content size. Instead it remembers and
    restores the widths set by the user. Implements #2353.
  • MKVToolNix GUI: multiplexer: the chapter name template will now be set
    automatically to the name template in the preferences’ "chapter editor"
    section. Additionally the option --generate-chapters-name-template … will
    be passed to mkvmerge in situations when mkvmerge will generate chapters
    (either because automatic generation is enabled or if chapters are generated
    for MPLS playlists). Part of the implementation of #2275.
  • MKVToolNix GUI: chapter editor: if the chapter name template is empty,
    chapters will be generated without names. Part of the implementation of
  • MKVToolNix GUI: chapter editor: added an option to remove all chapter names
    to the "additional modifications" dialog. Part of the implementation of

Bug fixes

  • mkvmerge: Matroska reader: fixed wrong timestamps when appending Matroska
    files where the second Matroska file’s first timestamp is bigger than 0.
    Fixes #2345.
  • mkvmerge: MP4 reader: fixed division by zero errors during file
    identification if the timescale is 0 in the MVHD atom.
  • mkvmerge: Windows Television DVR files are now recognized as an unsupported
    file type. This prevents mis-detection as MPEG-2 with an accompanying flood
    of error messages. Fixes #2347.
  • MKVToolNix GUI: info tool: under certain circumstances "cues" were shown at
    the wrong level (inside the previous master element instead of on level
    1). Fixes #2361.
  • MKVToolNix GUI: job queue: fixed invalid memory handling and consequent
    crashes when using the "edit in corresponding tool & remove from job queue"
    option if one of the files in that job contained attached files. Fixes

Build system changes

  • An AppStream metadata file will be installed in $prefix/share/metainfo.

Have fun :)

4 thoughts on “MKVToolNix v26.0.0 released

  1. JasinChen

    I have an advise for you.In Chapter editor,I found the option “country” includes ”Taiwan” and “Hong Kong”, and “China” is Specially marked as “PRC”.I think it will cause an argument with users between Chinese Mainland and Taiwan.I suggest that you can delete the “Taiwan” and “Hong Kong” from country.

    1. The Administrator

      I simply follow the Matroska specifications, and those use the official list of ISO 639-2 language codes and ISO 3166-1 country codes. As long as the ISO lists Taiwan as a separate country, MKVToolNix will, too.


    I am having problems in my sony bluray player playing mkv files with mkvtoolnix 26.0.
    The problem is in matroska format! Player dont like v2 and v4 only v1 works well !!
    How do i do mkvtoolnix to create only v1 matroska files ??

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