Free Video Converter Online
Convert video between MP4, MOV, AVI, MKV, WEBM and more — entirely in your browser. FileChange uses FFmpeg compiled to WebAssembly, so your footage is processed on your own device with no upload required.
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Frequently Asked Questions
How does in-browser video conversion work?
FileChange uses FFmpeg compiled to WebAssembly (FFmpeg.wasm), so video conversion runs entirely on your device. Nothing is uploaded to a server.
Which video formats are supported?
MP4, MOV, AVI, MKV, WEBM, FLV, WMV and 3GP, plus extracting the audio track from a video.
Why is the first video conversion slower?
The first run downloads the FFmpeg engine once. After that, conversions start instantly for the rest of your session.