Why will not my WebM file play in Premiere or on my phone?

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

Does my file get sent anywhere?

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

Will I lose quality converting WebM to MP4?

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

Need the reverse or another format?

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

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Convert any video format

Convert or transmux between MP4, WebM, MOV, and MKV. Keep original quality or shrink the file, all in-browser.

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

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MP4, MOV, WEBM, MKV · stays on your device

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