MKVToolNix is a small collection of tools (mkvmerge, mkvinfo, mkvextract, mkvpropedit and mmg) that allows you to manipulate Matroska (MKV) files in several ways. You can use MKVToolNix to create, split, edit, mux, demux, merge, extract or inspect Matroska files.
The program will also work with other video formats (AVI, MPEG, MP4, MPEG, Ogg/OGM, RealVideo, MPEG1/2, h264/AVC, Dirac, VC1) including some video codecs (such as VP9 video codec support – reading from IVF/Matroska/WebM files, extract to IVF files).
Audio formats (AAC, FLAC, MP2, MP3, (E)AC3, DTS/DTS-HD, Vorbis, RealAudio) and also most subtitle formats (SRT, PGS/SUP, VobSub, ASS, SSA, etc.)
MKVToolNix is a cross-platform application that will work on Windows , Mac OS X and Linux.
Screenshots are not available
– Build system: fixed building on non-UTF-8 locales.
– MKVToolNix GUI: multiplexer: implemented a workaround for drag & drop not working on macOS with Qt 5.12 due to a bug in Qt 5.12.
– MKVToolNix GUI: chapter editor: when opening a Matroska/WebM file that doesn’t contain chapters and later saving chapters back to them, the editor was truncating the file down to a couple of KB in size. (regression)