Convert WebM to MP4 online (free, in-browser) - OpenClip
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Convert WebM to MP4 online (free, in-browser)

Convert WebM video into MP4 that plays everywhere, straight from your browser. No uploads, no signup. Your video never leaves your device.

1

Upload your WebM

Drop any .webm file. Processing happens in your browser.

2

Convert to MP4

The video is re-encoded to H.264 MP4 automatically.

3

Download the MP4

Save an MP4 that plays on any device or editor.

Step 1

Upload your file

MP4, MOV, WEBM, MKV, and more. Files never leave your device.

Questions & answers

Many players and editors do not support WebM or VP9. Converting to H.264 MP4 fixes playback and import almost everywhere.

No. The conversion runs locally in your browser, your video never leaves your device, and nothing is stored.

A re-encode is required since the codecs differ, but high-quality defaults keep the result visually identical for normal use.

The format converter also handles MP4 to WebM, MOV, and MKV.

Stop editing one clip at a time.

OpenClip finds your best moments, reframes them face-aware for every platform, writes the captions, and posts them. One upload, a week of content.

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