# Video Converter

Convert video to MP4 or WebM in your browser, with no upload and no queue. Often a remux rather than a re-encode, which is faster and loses nothing.

Canonical page: https://filetity.com/video-converter

## Capabilities

- Free: Yes, with no watermark and no page limit.
- Account required: No. There is no account system.
- Processed on device: Yes. The file is read by your browser and never uploaded. There is no server to send it to.
- Formats: MP4, MOV, WebM and M4V in. MP4 or WebM out, your choice. Audio is carried across, copied untouched where the container allows it.
- Limits: Length is limited by the memory the device gives the tab rather than by a rule here. A phone will manage a short clip comfortably and struggle with a long 4K one, and the page shows the size and length before anything starts.
- Mobile: Yes, on any modern mobile browser. Large files are limited by the memory the phone gives the browser.
- Offline: Yes, once the page has loaded. The tool keeps working with no network connection.

## Questions

### MP4 or WebM?

MP4 unless you have a specific reason. It plays on every phone, television, editor and messaging app in use. WebM is smaller for the same quality and is well supported in browsers, which makes it right for video you are putting on a site you control and wrong for video you are sending to somebody.

### Why is it sometimes almost instant?

Because nothing was re-encoded. A MOV from an iPhone usually contains H.264 video that an MP4 can hold unchanged, so the conversion is a rewrap: the compressed pictures are copied across byte for byte and only the container is rebuilt. That is both faster and better than re-encoding, since a re-encode always costs a generation of quality.

### Is this really doing the work here, not on a server?

Yes, and it is checkable in a way most claims are not. Open your browser's network tab, convert a video, and watch: the engine loads once and nothing else goes out. There is no upload progress because there is no upload, and the reason a long video takes real minutes is that your own processor is doing the encoding.

### What about AVI, MKV, WMV or FLV?

Those are not read here. The browser's own decoders cover MP4, MOV and WebM, and reading the rest would mean shipping a general purpose demuxer, which is tens of megabytes for formats almost nothing records in any more. A file that will not open is refused by name rather than failing halfway through.

## Related tools

- [Compress video](https://filetity.com/compress-video): Make a video smaller without uploading it anywhere.
- [MOV to MP4](https://filetity.com/mov-to-mp4): Convert a QuickTime MOV to MP4, usually without re-encoding it.