Private media processing
ffmpeg.wasm processes files in the browser. Desktop supports up to 500 MB with a warning above 200 MB; mobile devices support up to 200 MB.
Choose a supported video or audio file.
Select the output format and quality, then wait for the engine on first use.
Preview and download the result when processing finishes.
No. The file is written to a temporary in-browser memory filesystem and processed by WebAssembly.
Video must be decoded and encoded frame by frame, and browser FFmpeg is slower than a native application. Short clips work best.
No. Download the result before closing the page.