MKVToolnix

MKVToolnix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices and Windows. They do for Matroska what the OGMtools do for the OGM format and then some.

With these tools one can get information about (mkvinfo) Matroska files, extract tracks/data from (mkvextract) Matroska files and create (mkvmerge) Matroska files from other media files. Matroska is a new multimedia file format aiming to become THE new container format for the future.

• Release Date: Nov 9, 2025
• Download(s):
  mkvtoolnix-32-bit-96.0-setup.exe
  mkvtoolnix-32-bit-96.0.7z
  mkvtoolnix-64-bit-96.0-setup.exe
  mkvtoolnix-64-bit-96.0.7z
  MKVToolNix-96.0.dmg
  MKVToolNix_GUI-96.0-x86_64.AppImage
• # 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.