Heya,
- MKVToolNix V49.0.0 Released | Mosu's Matroska Stuff
- Mkvmerge Gui Tool
- Download MKVToolNix Latest Release
- See Full List On Mkvtoolnix.download
again I’m releasing a bit early, not even four weeks after the previous one. This release, however, does pack quite a bit more of a punch than the previous ones, both in terms of enhancements and bug fixes. On top of that one of the libraries used (libEBML) has just been released fixing several heap overflow bugs, and I didn’t want to wait too long to get those fixes into a new MKVToolNix release.
There have been several changes concerning package maintainers. Please refer to the NEWS below for details.
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 over the course of the next couple of hours.
Here are the NEWS since the previous release:
New features and enhancements
However, mkvmerge, which is doing all the work, is fully scriptable via its command line. There are excellent shells out there with which you can automate pretty much all aspects of muxing. For example, with the bash or zsh shells you could convert all.avi files into Matroska with these commands. Mac yosemite update. Mkvmerge: Ogg Opus reader: fixed the handling of Ogg Opus streams that contain a just one Ogg page (mkvmerge aborted with an exception). MKVToolNix GUI: multiplexer: dragging & dropping XML files with chapters or tags to the GUI’s window was broken in v42. Instead of adding the file names. This is more or less a small bugfix release of MKVToolNix. One rather important new feature is support for the new Matroska elements introduced for storing additional codec-initialization data needed for techniques such as MVC (3D video) or Dolby Vision metadata. Mkvmerge cannot produce them itself yet, but it will keep the data that’s present, e.g. When reading files created by MakeMKV.
- mkvmerge: added support for using ISO 639-3 language codes in IETF BF47 language tags. Part of the implementation of #3007.
- mkvmerge: AC-3 parser: added support for byte-swapped AC-3 data. Implements
#3022. - mkvmerge: Matroska reader: for audio tracks that have the bit depth track header set mkvmerge will now keep that header even for codecs that don’t require it for decoding. Implements #3009.
- mkvmerge: MPEG transport stream reader, PCM audio tracks: mkvmerge will now re-order the channels for 5.1, 7.0 and 7.1 channel tracks from the Blu-ray layout to the WAVEFORMATEXTENSIBLE layout expected in Matroska. Patch by Tom Yan. Implements #2988.
- mkvmerge, mkvinfo, mkvpropedit, MKVToolNix GUI: added support for the following new track header elements: 'hearing impaired' flag, 'visual impaired' flag, 'text descriptions' flag, 'original' flag, 'commentary' flag. Implements #3011.
- MKVToolNix GUI: added support for using ISO 639-3 language codes in IETF BF47 language tags. As there are several thousand of them, they’re deactivated by default and must be activated in the preferences ('GUI' → 'Often used selections' → 'Languages'). Part of the implementation of #3007.
- MKVToolNix GUI: multiplexer: when adding Blu-rays the user can select multiple playlists to add simultaneously in the 'select playlist to add' dialog. Implements #2961.
- MKVToolNix GUI: multiplexer: the file name extensions 'eb3' and 'ec3' were added for Dolby Digital Plus & 'mpl' for Dolby TrueHD in the file dialogs. Part of the implementation of #3027.
- MKVToolNix GUI: multiplexer: when adding multiple files the dialog asking the user what to do with them has gained a new checkbox. If enabled, all files containing at least one video track will always be placed in newly created multiplex setting. Implements #2966.
- MKVToolNix GUI: multiplexer: added a menu entry in the 'Multiplexer' for adding all files that are currently in the clipboard. Implements #3006.
Bug fixes
- all: Windows: fixed compatibility with gettext 0.21 and newer on mingw.
- all: Windows: fixed several of the programs having problems with certain Unicode characters (primarily emojis) in file names (e.g. mkvextract wrongfully complaining about an 'invalid mode' or the GUI not being able to find parts of Blu-ray file structures).
- mkvextract: AAC: fixed wrong channel mask field in the ADTS headers for 7.1 channel layouts. Fix by Tom Yan. Fixes #2636.
- mkvextract: h.265/HEVC extraction: if the first frame starts with the parameter sets (SPS, PPS & VPS), the ones from CodecPrivate aren’t written and the ones from the first frame are kept. Fixes #3031.
- mkvmerge: fixed the calculation of chapter timestamps read from NTSC DVDs. Fix by Tom Yan.
- MKVToolNix GUI: IETF BCP 47 language widget: the language combo box will now always contain the language code the user enters in the free-form field, even if it isn’t in the list of often-used languages the user configured in the preferences.
- MKVToolNix GUI: multiplexer: when browsing for the destination file name the default directory is now chosen according to the preferences regarding how the destination file name should be formed. For example, if the policy is set to 'fixed output directory' then that output directory will be the one initially set when the directory selection dialog is opened. Fixes #3021.
- MKVToolNix GUI: multiplexer: fixed the removal of appended source files if the 'delete source files' end-of-job action is enabled. Fixes #3029.
- MKVToolNix GUI: chapter editor: when importing chapters from DVDs the IETF BCP 47 language elements will be set, too, not just the legacy language elements.
Build system changes
- libEBML v1.4.2 and libMatroska v1.6.3 are now required. The optional, bundled copies of both libraries have been updated to those versions. This bump in requirements fixes several heap overflow bugs in libEBML.
- MKVToolNix is now using the C++17 library feature 'file system library' instead of Boost’s 'file system' and 'system' libraries. For the GNU Compiler Collection (gcc) libstdc++ this means v8 or newer is required; for clang’s libc++ it means v7 or newer. For macOS this means that provided disk image will only run on 10.15 'Catalina' or newer.
Have fun :)
Hey y’all,

MKVToolNix V49.0.0 Released | Mosu's Matroska Stuff
let’s do a second release in January, fixing a couple of annoyances that crept in lately. Just a smaller maintenance release; nothing earth shattering. But see for yourself down below.


Nothing’s changed for package managers.
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 over the course of the next couple of hours.
Here are the NEWS since the previous release:
New features and enhancements
- MKVToolNix GUI: using one of the command line options
--info,--edit-headersor--edit-chapterswill make the GUI select the
corresponding tool on startup even if no further file name is
given. Implements #2723. - MKVToolNix GUI: multiplexer: added a setting in the preferences for changing
the location of the MediaInfo executable for when the user accidentally
selected the wrong one.
Mkvmerge Gui Tool
Bug fixes
Download MKVToolNix Latest Release
- mkvmerge: AVC/h.264 parser: the order of the NALUs before each key frame was
sometimes wrong: mkvmerge wrote SPS & PPS after SEI NALUs. Now SPS & PPS
NALUs are always written before the other NALUs. Patch by Torsten
Hauska. Part of the implementation of #2709 and part of the fix of #2250. - mkvmerge: AVC/h.264 parser: when additional SPS or PPS NALUs (with IDs that
haven’t been seen so far) are found mid-stream, mkvmerge will prepend all
following key frames with all current valid SPS & PPS NALUs (just like when
SPS & PPS NALUs are overwritten mid-stream). Part of the fix of #2250. - mkvmerge: MPEG TS reader: fixed detection of MPEG-1/2 video tracks
consisting of very few frames. Fixes #2732. - mkvmerge: Ogg Opus reader: fixed the handling of Ogg Opus streams that
contain a just one Ogg page (mkvmergeaborted with an exception). Fixes
#2722. - MKVToolNix GUI: multiplexer: dragging & dropping XML files with chapters or
tags to the GUI’s window was broken in v42. Instead of adding the file names
to the appropriate input boxes the GUI was running mkvmerge for file
identification purposes which then failed. Fixes #2718.
See Full List On Mkvtoolnix.download
Have fun :)
