This software provides a set of tools to create, alter and inspect Matroska files under Linux, Mac, and Windows. It has tools like (mkvmerge, mkvinfo, mkvextract, mkvpropedit, and mmg) that enable the users to manipulate Matroska (MKV) files in many easy ways. You can use MKVToolNix to create, split, edit, mux, demux, merge, extract or inspect Matroska files.
Moreover, it can 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 (AAC, FLAC, MP2, MP3, (E)AC3, DTS/DTS-HD, Vorbis, RealAudio) and also most subtitle formats (SRT, PGS/SUP, VobSub, ASS, SSA, etc.).