MKVToolnix is a set of tools to create, alter and inspect Matroska files under Windows.

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.

Changes in MKVToolnix 2.4.0 :

- mmg: bug fix: The chapter editor's function "save to Matroska file" was corrupting the target file in some cases. Fix for bug 307.
- mkvmerge: bug fix: mkvmerge was only writing one reference block for real B frames. Patch by Daniel Glöckner. Fix for bug 306.
- all: bug fix: The Windows uninstaller was not removing all start menu entries during uninstallation on Windows Vista. The installer now creates the start menu entries for all users instead of the current user only. Fix for bug 305.
- mmg: bug fix: The "language" drop down box contained some entries twice or more. Fix for bug 304.
- mkvmerge: bug fix: Incorrect usage of the iconv library caused some conversions to omit the last character of each converted entry (e.g. for the conversion from Hebrew to UTF-8). Fix for bug 302.
- mkvmerge: enhancement: mkvmerge will use the timecodes provided by the MPEG program stream source file for VC1 video tracks.
- mkvmerge: bug fix: Reading EVOBs with multiple VC1 video tracks was broken (all packets where put into a single video track).
- mkvextract: new feature: Added support for handling SimpleBlocks for timecode extraction.
- mkvmerge: bug fix: Reading raw (E)AC3 files bigger than 2 GB was broken.
- mkvmerge: new feature: Added support for Dirac video tracks.
- mkvmerge: bug fix: Improved the detection of MPEG-1/-2 and AVC/h.264 video tracks in MPEG program streams (VOBs/EVOBs).
- mkvmerge: bug fix: Fixed reading DTS audio tracks from MPEG program streams (VOBs/EVOBs).
- mmg: enhancement: Added the extensions "evo", "evob" and "vob" to mmg's "add file" dialog.
- mkvmerge: new feature: Added support for muxing VC1 video tracks read from MPEG program streams (EVOBs) or raw VC1 elementary streams (e.g. as produced by EVODemux).
- mkvmerge: new feature: Added support for 7.1 channel EAC3 files. Fix for bug 301.
- mkvmerge: bug fix: Revision 3831 (the change to the "--delay" and "--sync" options) caused mkvmerge to no longer respect the delay caused by garbage at the beginning of MP3 and AC3 audio tracks in AVI files. The timecodes of such tracks are now delayed appropriately again. Fix for bug 300.
- mkvmerge: bug fix: Unknown stream types in Ogg files (e.g. skeleton tracks) don't cause mkvmerge to abort anymore. They're simply ignored. Fix for bug 299.
- mkvextract: new feature: Added support for extracting Theora video tracks into Ogg files. Fix for bug 298.
- mkvmerge: bug fix: Fixed the frame type (key or non-key frame) detection for Theora tracks.
- mkvmerge: all: On Unix/Linux rpath linker flags have been removed again (they were actually removed before the release of v2.3.0).