Screen recordings and browser downloads often come as WebM, which many editors and phones can't open. Convert WebM to MP4 (H.264 + AAC) for universal playback and editing.
Drag & drop, click to browse, or paste
MP4, MOV, WebM, MKV
Runs fully in your browser. Your files are never uploaded.
Drop, paste or choose a MOV, MP4, WebM or MKV file. It stays on your device.
Pick MP4 for maximum compatibility or WebM for the web, and set the quality.
Conversion runs in your browser with hardware acceleration. Preview the result and save the file.
Your files are processed on your device and never uploaded to any server.
No account, no limits and no watermark on your results.
Runs at native speed in your browser and keeps working once the page has loaded.
You choose the settings - nothing is silently downscaled or recompressed.
WebM uses VP8 or VP9 video, which many desktop editors and phone galleries do not support. MP4 with H.264 is accepted almost everywhere.
Yes. The Opus audio inside the WebM is converted to AAC, the audio format MP4 players expect.
The video has to be re-encoded to H.264. Thanks to hardware acceleration this is usually close to real time or faster on a modern computer.
