Cinema · room 4
Video Converter
Convert videos between MP4, WebM and MOV — hardware accelerated.
🔒 Processed in your browser · No upload · No sign-up
Drop a video file here or click to browse
MP4, MOV, WebM, MKV… Files over ~500 MB may exceed browser memory.
Convert videos to MP4, WebM or MOV — privately
Change a video's container and codec without uploading it anywhere. The converter uses your browser's built-in, hardware-accelerated video encoder (WebCodecs), which is often many times faster than other online converters.
What if my browser doesn't support a format?
If hardware conversion isn't available for your file (for example some MKV or AVI files, or older browsers), the tool automatically switches to FFmpeg compiled to WebAssembly. It's slower and downloads a ~30 MB engine once, but supports almost any input.