Convert WebM to MP4
Repackages the video for a player that wants a different format.
- Free to try — no account for your first conversion
- Files up to 500 MB
- Deleted automatically, never looked at
About converting WebM to MP4
Video conversion is two decisions: the container — MP4, here — and the codecs inside it. We re-encode at a sensible quality rather than the maximum, because the difference is invisible and the file size is not. Resolution and length come across unchanged.
How to convert WebM to MP4
Add your WebM file
Drag it onto the box above, click to browse, or paste it straight from your clipboard.
Check the settings
MP4 is already selected. The defaults suit most files, and you can open Settings if you want to change the quality or size.
Download the MP4
Most files are ready in a second or two. Larger ones convert in the background while you watch the progress.
Quality
The file is re-encoded, so the MP4 is visually equivalent rather than bit-for-bit identical. At the default settings the difference is not something you would notice.
File size
Up to 500 MB per file on this conversion
Speed
Runs in the background — you can watch the progress and download when it finishes
Questions people ask
- Is converting WebM to MP4 free?
- Your first conversion needs no account at all. A free account gives you three more, and a subscription removes the limit.
- What happens to my file?
- It is deleted automatically, along with the result, and nobody looks at either. Nothing you upload is used to train anything.
- How large can my WebM file be?
- Up to 500 MB per file on this conversion
- Will the MP4 look the same as the WebM?
- The file is re-encoded, so the MP4 is visually equivalent rather than bit-for-bit identical. At the default settings the difference is not something you would notice.
- How long does it take?
- Runs in the background — you can watch the progress and download when it finishes