Video Converter
Convert almost any video to MP4, private, in your browser.
About Video Converter
Convert video files from nearly any source format—including WebM, QuickTime MOV, Matroska MKV, AVI, and FLV—into universally compatible MP4 video.
Every conversion is executed client-side via WebAssembly-compiled FFmpeg. Your video files are processed entirely in your web browser's sandboxed memory without uploading a single byte across the internet. This guarantees absolute data confidentiality, eliminates upload and download bottlenecks, and lets you convert videos securely even on restricted connections. The generated MP4 is encoded with standard H.264 video and AAC audio with even dimensions and faststart flags for seamless playback on any device.
How to use Video Converter
- Drag and drop your video file (WebM, MOV, MKV, AVI, etc.) into the upload zone above, or click to choose a file from your device.
- Select your target compression level: Balanced (CRF 23) for general use, Higher quality (CRF 18) for pristine detail, or Smaller file (CRF 28) for lightweight web sharing.
- Click the Convert button to start client-side transcoding with FFmpeg WebAssembly.
- Preview the finished MP4 video directly in the browser player and click Download to save it with no watermarks.
FAQ
- Is my video uploaded?
- No, conversion runs entirely in your browser.
- How large a file can I convert?
- Short clips work best. Very large or long HD videos may exceed browser memory limits.
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