FFmpeg Stream Copy
Tools for stream copying (-c copy). Remux containers and perform fast cuts without quality loss.
Remux MP4 to MKV
Change container instantly (no quality loss).
ffmpeg -i input.mp4 -c copy output.mkv
Note:Copies video and audio streams directly into a new container. Very fast and lossless.
Remux MKV to MP4
Change container to MP4 (no quality loss).
ffmpeg -i input.mkv -c copy output.mp4
Note:Works if the codecs inside MKV are compatible with MP4 (e.g., H.264/AAC). If not, you must re-encode.
VIDEO API
Discover why Hunt is the preferred API provider for developers.