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.
MkvToMp4 can change the mkv to Mp4 without reconverting/transcoding video (If the original video in H264 format). Support for multiple internal and external audio...
mkvtomp4 can change the mkv to mp4 without reconverting/transcoding video (if the original video in h264 format). support for multiple internal and external audio tracks. support subtitle formats: srt, ass, ssa, ttxt. changing colors for subtitles. add and edit tags for mp4 files (m4v, m4a, m4b). searching tags on thetvdb, themoviedb and itunes web sites. artworks and chapters for mp4 files. encode video for nonh264. correction of the atoms in mp4 files to be able to change the audio and subtitle on apple devices. english and russian interface.
video-conversion album-artwork subtitle-support video-tagging chapters mkv-to-mp4