Drop videos, or browse
Select several at once to convert them into a ZIP.
avi · flv · mov · mp4 · mpeg · ogg · webm · wmv & more
Drag your video onto the drop zone, or click to browse and pick it from your device.
In the options dialog, MP4 is set as the target format; you can also choose an optional resolution (360p, 480p, 720p, or 1080p) or tick the compress checkbox.
Click Convert to start processing.
Watch the progress percentage overlaid on a preview of your video while FFmpeg works in the browser.
When it reaches 100%, the finished MP4 downloads automatically.
MP4 is the closest thing digital video has to a universal language. Phones, smart TVs, game consoles, browsers, and editing programs all understand it, which is why converting to MP4 is usually the quickest fix for a video that refuses to play. This tool accepts files in formats such as AVI, WMV, FLV, MOV, MKV, MPEG, and WebM and re-encodes them as MP4 using the H.264 codec, entirely inside your browser.
Two common situations where this helps: a screen recorder saved your tutorial as MKV and your course platform only accepts MP4 uploads, or you found an old WMV family clip that your iPhone cannot open. Convert it once and the result will play on almost any device without installing extra software.
100% private“Your video never leaves your computer. The conversion runs inside your browser tab using a WebAssembly build of FFmpeg, so the file is never uploaded, stored, or seen by any server.”
The tool encodes MP4 files with H.264. It is decoded in hardware on virtually every phone, laptop, and TV made in the past decade, so playback is smooth and battery-friendly.
MP4 with H.264 is the one combination that nearly every platform supports out of the box, from iOS and Android to Windows, macOS, and web browsers. If you only want to keep one copy of a video, MP4 is the safest choice.
No. The FFmpeg engine runs as WebAssembly inside your browser, so the file is read and written locally on your device. Nothing is transmitted over the network, and there is no server queue to wait in.