Video
Tools will load when you run.Video Compressor≈
Reduce video file size locally with FFmpeg and export MP4.
Your result.
How to use Video Compressor
- Choose your MP4, WEBM, MKV, MOV, AVI, GIF, MPEG, MPG, M4V, OGV, TS.
- Upload a video and choose Light, Balanced or Maximum compression. The browser engine downloads on first use. Up to 4K (3840×2160 or portrait), with a resolution-dependent duration: up to 10 minutes at 1080p or 150 seconds at 4K. File and output limits apply separately.
- Download the compressed MP4, or the original if compression does not produce a smaller file.
Process multiple files
Use a workflow to apply the same settings to each file.
Formats and requirements
- Input formats
- MP4, WEBM, MKV, MOV, AVI, GIF, MPEG, MPG, M4V, OGV, TS
- Output
- MP4
- Availability
- Free in your browser and through the CLI
- Files per operation
- 1
- Browser file limit
- 128 MiB per file, 128 MiB total
What to expect
Processes locally with FFmpeg. Browser processing uses WebAssembly and downloads the engine on first use; large videos are better suited to the CLI. Re-encoding may lose quality. GIF output has no audio. Browser limits: Up to 4K (3840×2160 or portrait), with a resolution-dependent duration: up to 10 minutes at 1080p or 150 seconds at 4K. File and output limits apply separately.
Do my files leave my device?
No. Thanks to advanced file-processing technology, your files are processed directly on your device, inside your browser. OneKit does not receive your input files or results. Required public processing libraries may download when you first use the tool.
File privacy and local processing →