mkvmerge

Mkvmerge is a versatile command line tool used for merging multimedia files in the Matroska container format (MKV). It is available for Windows, Mac, and Linux operating systems, offering cross-platform compatibility. With Mkvmerge, you can merge multiple video, audio, and subtitle streams into a single MKV file. It supports a wide range of multimedia formats including MKV, AVI, MP4, MPEG, MP3, FLAC, and many more. Mkvmerge allows you to customize various aspects of the resulting MKV file, such as adjusting track ordering, language, and track names. It also provides options for selecting specific audio and subtitle tracks, discarding unwanted streams, and specifying compression settings. Mkvmerge supports a wide range of subtitle formats, including SRT, SSA, ASS, PGS, VobSub, and more. It offers advanced features like chapter generation, timecode adjustment, and the ability to extract specific tracks from a multimedia file. Mkvmerge is incredibly fast and efficient at merging files, making it a popular choice among professionals and enthusiasts alike. Lastly, Mkvmerge is an open-source tool, which means it is free to use and is regularly updated to support new features and formats.