MP4 with H.264 video is the most widely compatible video format around. It plays on nearly every phone, TV, browser, and editor without extra codecs.

Is my video uploaded anywhere?

No. The conversion happens in your browser with WebCodecs. Your video never leaves your device, and there's no watermark.

What can I convert from?

Drop almost any common video like MOV, WEBM, or MKV and get back a standard H.264 MP4, ready to share or upload anywhere.

MP4 Converter

Feed it MOV, WEBM, MKV, or more and get back an MP4 with H.264 video and AAC audio.

What this does

Convert almost any video to MP4 with H.264 video and AAC audio, the most widely compatible format around. Drop a MOV, WEBM, or MKV and it's re-encoded entirely in your browser with WebCodecs.

How it works

1Drop your MOV, WEBM, MKV, or other video file.
2Hit Convert to MP4 and watch the progress bar encode.
3Download your MP4. It never leaves your browser.

Built with open source

Mediabunny — Converts and edits video and audio in the browser via WebCodecs. Add-on encoders cover MP3, AAC, and FLAC. · MPL-2.0

Frequently asked questions

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WEBM to MP4Convert WEBM video to MP4. Re-encodes to H.264 video and AAC audio for the MP4 container.MKV to MP4Convert MKV (Matroska) video to MP4. Copies a matching H.264 stream, or re-encodes to H.264 and AAC.Video ConverterConvert video between MP4, MOV, WEBM, and MKV. Pick a format and convert in one step.MOV to MP4Convert QuickTime MOV video to MP4. When the streams are already H.264/AAC they're copied without re-encoding.Video to GIFTurn a video clip into an animated GIF. You set the frame rate and width; GIF maps to 256 colors.MP4 to GIFConvert an MP4 video to an animated GIF. You set the frame rate and width; GIF maps to 256 colors.