input.mkv
Selected file
FFmpeg command
ffmpeg -i 'input.mkv' -c copy -movflags +faststart 'output.mp4'MKV → MP4
Convert MKV videos to MP4 for broader compatibility.
-c copyCopies the existing video and audio streams without re-encoding.
-movflags +faststartMoves MP4 metadata to the beginning of the file for faster playback over the web.