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: Jan 5, 2021
• Download(s):
  mkvtoolnix-32-bit-52.0.0-setup.exe
  mkvtoolnix-32-bit-52.0.0.7z
  mkvtoolnix-64-bit-52.0.0-setup.exe
  mkvtoolnix-64-bit-52.0.0.7z
  MKVToolNix-52.0.0.dmg
  MKVToolNix_GUI-52.0.0-x86_64.AppImage
• # Version 52.0.0 "Secret For The Mad" 2021-01-04
  
  
  ## New features and enhancements
  
  
  * MKVToolNix GUI: job queue: the maximum number of jobs to run concurrently
    can now be increased in the preferences. The default remains
    at 1. Implements #2984.
  * MKVToolNix GUI: the GUI will now add a context-specific default extension to
    file names selected for saving on platforms that don't add one itself
    (e.g. GNOME). For example, when saving multiplexer settings the extension
    `.mtxcfg` will be added. Implements #2983.
  * MKVToolNix GUI: added an option to the preferences for the window to stay on
    top of other windows. Implements #2967.
  
  
  ## Bug fixes
  
  
  * mkvextract: h.265/HEVC extraction: the code for skipping extraction of
    prefix SEI NALUs in the first frame was skipping two bytes too few,
    resulting in broken processing of all following bytes. Patch by Mike Chen.
  * libEBML: the optional, bundled version of libEBML was updated to v1.4.1.
  
  
  ## Build system changes
  
  
  * libEBML v1.4.1 is now required due to a bug in libEBML that caused pointers
    to just-freed memory being returned to the caller under certain invalid data
    constellations, causing use-after-free errors in all of MKVToolNix's
    programs. Fixes #2989.