Video Convert
Convert between MP4, AVI, MOV, MKV formats
Memory Usage Notice
Video conversion uses significant browser memory. For best results:
- • Use files smaller than 200MB for optimal performance
- • Close other browser tabs to free up memory
- • For large files, consider reducing resolution or quality
- • If conversion fails, try with a smaller file or different settings
Preparing video processing engine...
Loading ffmpeg.wasm library (~30MB). This happens once and will be cached.
Loading video engine...
💡 Video Conversion Tips:
- Format Choice: MP4 is most compatible, WebM is best for web, MKV supports more codecs
- Codec Selection: H.264 for compatibility, H.265 for efficiency, VP9 for web, AV1 for future-proofing
- Quality vs Size: Lower CRF values = higher quality but larger files
- Resolution Impact: Reducing resolution significantly decreases file size
- Audio Quality: Lower audio bitrates save space with minimal quality loss
- Device Compatibility: Some devices prefer specific formats and codecs
- Privacy First: All processing happens locally in your browser - your videos stay private
🔒 🔒 For your privacy, this tool runs entirely in your browser. Your files never leave your computer—zero uploads to any server.