A remux changes the wrapper (e.g., MKV to MP4) without re-encoding. This is lossless and fast.
FFmpeg is a free and open-source software project that produces libraries and programs for handling multimedia data. It can be used for a variety of tasks, including: ghosts s03e01 ffmpeg
ffmpeg -i ghosts_s03e01.mkv -vf "fps=1/60,scale=160:90,tile=4x5" -frames:v 1 preview.jpg A remux changes the wrapper (e