Fix video container (no re-encoding)
Remux streams safely, keep quality intact, and export a reusable command.
1
Upload or select a video
Pick one path to get started.
No file selected.
Currently selected: none
Processed locally in your browser. Files never leave your device.
2
Choose output container
Pick the box your streams will live in.
Current container
Detecting...
Shown as FFmpeg’s detected format family, not a single container.
Streams copied as-is. Zero quality loss.
3
Export and download
Download the remuxed file or preview the result first.
Quickly verify playback and metadata after remux.
Preview will appear here after analysis.
CLI equivalent
Upload a video to generate a fixed, playable file.