Video Converter
Convert video files between formats online for free. MP4, WebM, MOV, AVI conversion. No upload required - process locally.
Free video format converter. Convert between MP4, WebM, MOV, AVI with quality control. Uses FFmpeg WASM - 100% browser-based, no uploads.
- ✓ Convert between MP4, WebM, MOV, and AVI formats
- ✓ Three quality presets: high, balanced, smaller file
- ✓ Uses FFmpeg WASM for professional-grade conversion
- ✓ Supports files up to 500MB
- ✓ 100% client-side - videos never leave your device
How to Convert Video Formats
- 1 Upload your video file by dragging or clicking the upload area
- 2 View the current format and file information
- 3 Select your desired output format (MP4, WebM, MOV, or AVI)
- 4 Choose the quality level for the converted video
- 5 Click 'Convert Video' and download the result
Frequently Asked Questions
How does browser-based video processing work? ▼
MagicKit uses FFmpeg compiled to WebAssembly (WASM). This brings professional video editing capabilities directly to your browser.
What video formats are supported? ▼
MP4, WebM, MOV, and AVI. Some tools also support MKV and other formats.
Is there a file size limit for videos? ▼
We recommend files under 500MB for optimal browser performance. Larger files will work but may be slower.
Why does video processing take time? ▼
Video encoding is computationally intensive. Processing happens on your device, so speed depends on your computer's capabilities.
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Last updated: January 15, 2026 · v2.1