Convert WebM to MP4
Convert WebM to MP4 so your video works in editors and on any device.
Files are processed temporarily and deleted automatically. We keep no permanent copies.
How it works
- Upload a file.
- Choose the format and quality.
- Convert and download the result.
WebM: great for the web, awkward everywhere else
WebM is the format the web itself produces. Browser screen recorders, online meeting tools, Discord clips and countless web apps export WebM because it's open, efficient and streams beautifully in Chrome and Firefox. The trouble starts the moment the file leaves the browser: iPhones and Safari handle it poorly, most TVs ignore it, and several major editing programs won't import it at all.
Converting to MP4 turns that web-native file into one that behaves everywhere - it lands in an iMessage thread, plays from a USB stick on a TV, and drops into any editing timeline without an import error.
From screen recording to something you can actually send
The typical journey of a WebM file: you record a quick demo or bug report with a browser tool, and then the person you send it to can't open it - they're on an iPhone, or they double-click and Windows offers no player. Converting to MP4 before sharing removes that entire conversation.
Upload the WebM above, download the MP4, and send that instead. Resolution and frame rate stay as recorded, the file plays inline in chat apps instead of arriving as an unplayable attachment, and nobody on the receiving end needs to install anything to watch it.
Related tools
FAQ
Why can't my iPhone play WebM files?
Apple's ecosystem has never fully embraced WebM: Safari and iOS support it only partially, so the file often shows as an unplayable attachment. Convert it to MP4 and it plays natively in Photos, iMessage and every iOS app.
Where did this WebM file even come from?
Most likely from a browser: web-based screen recorders, meeting tools, Discord clips and many web apps export WebM by default because it's the web's native video format. It's a good format - just not one the rest of your devices expect.
Does the conversion change how the video looks?
No - the resolution and frame rate of your recording are preserved, and for screen captures and normal footage the MP4 is visually identical to the WebM you uploaded.
What happens to the file I upload?
It's processed temporarily and deleted automatically once the conversion is done; the download link expires shortly after too. Nothing you upload stays on our servers, so save the MP4 to your device when it's ready.
Do I need to install a converter program?
No - everything runs in the browser, on desktop or on a phone. Upload the WebM, wait a moment, download the MP4. No account, no installation, no cost.