Trim, resize, rotate, flip, change speed and volume, and convert video
entirely in your browser using FFmpeg compiled to
WebAssembly. Nothing is uploaded. All processing happens on your device.
The conversion engine (~30 MB) downloads the first time you convert a
file.
Drop a video file here or click to browse
MP4, WebM, MOV, MKV, AVI and other common video formats
File:Size:Duration:Resolution:
Trim
sec
sec
Full video selected.
Transform
Speed & Audio
1.00x
100%
Output
Enable Resize above to control GIF dimensions — unresized GIFs
are limited to 480px wide to keep file size reasonable.