MkvToMp4

MkvToMp4 is a program that can convert MKV, M2TS, and MTS files to MP4 without reconverting/transcoding video(If the original video in H264 format).

It features: support for multiple internal and external audio tracks, support for subtitle formats, ability to add and edit tags for MP4 files, artworks and chapters for MP4 files, correction of the atoms in Mp4 files to be able to change the audio and subtitle on Apple device, and more.