Convert WebM to MP4 Online
To convert a WebM file to MP4, upload the file below, pick MP4 as the target format, and download the universal version — done in your browser in about a minute.
WebM is what many screen recorders, browser extensions, and video sites produce by default. It streams well on the web, but iPhones, most video editors, and plenty of messaging apps stumble on it. Repackaging the recording as MP4 gives you a file you can edit in any timeline, text to anyone, or drop into a slide deck.
How it works
- 1
Upload the WebM recording
Drop in your screen capture or downloaded WebM — up to 500 MB per file. Browser-based upload means no app to install first.
- 2
Pick MP4 in the format menu
Choose MP4 from the available outputs. MOV, AVI, MKV, and WebM are there too, in case a specific tool in your workflow wants another container.
- 3
Download the universal file
Convert and download your MP4. Import it into iMovie or Premiere, attach it to a message, or embed it in a presentation without playback surprises.
Why use Video-Matic
Screen recordings, unlocked
Browser-based recorders love WebM, but editors and iPhones do not. One conversion turns your capture into a file everything accepts.
Fast cloud processing
The heavy lifting happens on our servers, so conversions finish quickly even from a modest laptop or a phone.
No watermark, ever
The MP4 you download carries no added logo or branding — safe to send to clients or publish as-is.
GDPR-friendly handling
Processing happens on servers in Paris, and every file is purged automatically within 24 hours of upload.
Frequently asked questions
Why is my screen recording a WebM file?›
Most browser-based screen recorders and Chrome extensions capture using the codecs built into the browser, and those write WebM natively — it is the format the web platform provides for free. That is fine for instant playback in a tab, but it becomes a problem the moment the file leaves the browser, which is where converting to MP4 comes in.
Can I edit a WebM file in iMovie or Premiere Pro?›
iMovie does not import WebM at all, and Premiere support depends on the version and codecs involved, so imports often fail or show audio only. Converting the recording to MP4 first gives both editors a file they handle natively, so you can trim, caption, and export without workarounds.
How much does the WebM to MP4 converter cost?›
Each conversion costs 1 credit, and creating a free account gives you 3 credits to start — three conversions for free, no card required. More credits come in one-time packs from the pricing page, with no subscription attached.
Does the conversion keep my recording private?›
Yes. The upload goes to EU-hosted storage, only your account can download the result, and both the WebM and the MP4 are deleted automatically within 24 hours. If your capture contains sensitive screens, that automatic cleanup means there is no long-lived copy on our side.