Resize Video
Scale video to a target width.
Resize Video scales footage to a chosen width while preserving aspect ratio, then exports MP4 via ffmpeg.wasm.
Frequently Asked Questions
Are my media files uploaded?
No. Processing uses ffmpeg.wasm in your browser. Files never leave your device. The first run downloads a ~25MB media engine from a CDN.
Why is the first run slow?
The media engine (~25MB) downloads once per browser session from a CDN, then stays cached.
Which formats work?
Most MP4/WebM/MOV and common audio formats your browser and ffmpeg.wasm can decode. Exotic codecs may fail.