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Video Converter

Convert videos between MP4 and WEBM, and set the resolution and bitrate at the same time. Add several files and they are converted one after another.

Drop video files here (multiple OK)Choose file
Any video your browser can play: MP4, WEBM, MOV (H.264) and more

Settings

0 means automatic, close to the original quality. Values are in Mbps.
Add a file to get started.
The video is played back once while it is re-recorded, so this takes about as long as the video itself. Keep this tab open and in front while it works.

How to use

1Add videosAdd one or more videos to convert.
2Pick format and qualityChoose MP4 or WEBM, then the resolution and bitrate. If unsure, leave them as they are.
3Convert and downloadEach finished file gets a Download button. With several files, download them as a ZIP.

When it helps

WEBM is common on the web, but some phones, editing apps and messaging apps cannot open it. On the other hand, WEBM is often lighter for web pages. This tool converts between the two.

Conversion works by playing the video once and recording it again, so it takes about as long as the video. In return, it runs entirely in your browser with no install, and your video is never uploaded.

Lowering the resolution or setting a bitrate also reduces file size. If shrinking the file is your main goal, the video compressor is easier to use.

FAQ

Why does converting take as long as the video?

Browsers have no fast way to re-encode video, so the tool plays it once and records the picture and sound again. A 10 minute video takes about 10 minutes.

I cannot select MP4.

Saving as MP4 is supported in recent Chrome, Edge and Safari. In other browsers only WEBM is available.

Can it open AVI, MKV or WMV?

Formats your browser cannot play cannot be opened. If the preview plays, the video can be converted.

Will the quality drop?

Re-encoding means the result is not identical to the original. Setting the bitrate higher than the original makes the difference hard to see.

Is my video uploaded to a server?

No. Conversion happens entirely in your browser.