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WEBM→MP4

WebM to MP4

Convert a WebM download into an MP4 that opens on a phone, in an editor and on a TV.

or drag and drop your file

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How to convert WebM to MP4

From WebM to MP4 in three steps, with H.264 video and AAC audio

1. Upload your WebM1

1. Upload your WebM

Drag the WebM onto the page or click “Upload”. The WebM converter takes files saved from a browser, a screen recorder or OBS. Up to 1 GB per file.

2. H.264 and AAC are already set2

2. H.264 and AAC are already set

The VP9 video and Opus audio inside the WebM are re-encoded to H.264 and AAC, which phones, tablets and TVs decode in hardware. Keep the resolution as it is unless you want a smaller file.

3. Download and open it anywhere3

3. Download and open it anywhere

Photos on the iPhone, iMovie, Premiere and PowerPoint all open the MP4. None of them imports a WebM.

Convert now
WebM to MP4 converter

WebM plays in browsers and little else

Every desktop browser plays WebM. Outside the browser, iOS Photos, iMovie, PowerPoint and WhatsApp all refuse it, so a clip that played perfectly on a website will not open after you download it.

MP4 selected as the output format for a WebM file

Hardware decoding on phones and TVs

Phones and TVs decode H.264 with a dedicated chip, while VP9 is often left to the processor. H.264 playback uses less battery and avoids the stuttering you get on older hardware.

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FAQ

Because a WebM file is only useful inside a browser. Video saved from a website often comes in this format, and it will not play in Photos, iMovie or PowerPoint.