Everything You Need for Video Conversion
A complete toolkit for converting video aspect ratios and formats. Built for content creators, marketers, and developers.
Core Features
100% Local Processing
Your videos never leave your device. All conversion happens locally, ensuring complete privacy.
Lightning Fast
Powered by FFmpeg, the industry-standard video processing engine. Hardware acceleration supported.
No Cloud Required
Works completely offline. No internet connection needed after installation.
CLI Support
Automate your workflow with our powerful command-line interface. Perfect for batch processing.
Multiple Interfaces
Use the desktop app, web dashboard, or CLI — whatever fits your workflow best.
No Account Needed
Download and use immediately. No sign-up, no login, no tracking.
Supported Aspect Ratios
16:9
Landscape
9:16
Portrait
1:1
Square
4:5
Portrait+
Transform Modes
Fit
Preserves entire video, adds letterbox bars
Fill
Crops to fill frame completely
Stretch
Stretches to fit (may distort)
Output Formats
MP4
Universal format, best compatibility
FreeMOV
Apple QuickTime, high quality
ProMKV
Open source, multi-track support
ProAVI
Microsoft format, large files
ProWebM
Web video, royalty-free
ProQuality Presets
| Preset | Quality (CRF) | Speed | Best For |
|---|---|---|---|
| High | 18 | Slow | Final production |
| Medium | 23 | Medium | General use |
| Low | 28 | Fast | Quick exports |
| Draft | 32 | Ultrafast | Preview only |