Convert WebM to MP4
Screen recordings and browser exports land as WebM that editors and phones won't open — convert to H.264 MP4 that plays everywhere.
- AV1/H.264-in-WebM sources often remux instantly
- VP8/VP9 re-encodes at hardware speed
- No upload — files never leave your device
- No watermark, no size cap · Free: 1080p, 5 exports/day
Frequently asked questions
Why won't my editor open WebM?
WebM carries VP8/VP9/AV1 video, which many editors, iPhones and TVs don't accept. MP4 with H.264 is the universal target — that's exactly what this produces.
Is quality lost?
VP8/VP9 sources are re-encoded (that's unavoidable when changing codec), at a quality-matched bitrate. If your WebM already contains AV1 or H.264 that MP4 can carry, it's remuxed instantly with zero loss instead — the probe tells you which path applies.
I recorded with a screen recorder — huge file. Can I also shrink it?
Convert first, then use the compress tool — or compress directly, which re-encodes to a target size in one pass. Both run locally; nothing uploads.