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A/V · Conversion
Convert video formats locally
Drop a clip, pick MP4 / WebM / MKV. ffmpeg.wasm re-encodes in your browser - slow but completely private.
Runs locallyffmpeg.wasm
Re-encoding with ffmpeg.wasm is single-threaded. MP4 is fastest. WebM (VP9) is 3-5x slower even on Fast mode. For batch jobs, use native ffmpeg.
Drop a video file
any container ffmpeg can read · max 200 MB