Convert Video Online — MP4 & WebM with Quality Control
Convert videos between formats with fine-grained quality control
Video Converter is an online video application on MiOffice AI that convert videos between formats with fine-grained quality control. Files never leave your browser — private and secure.
By Jay at JSVV SOLS LLC
Convert videos between formats with fine-grained quality control. Choose output format, CRF quality, and resolution.
How It Works
Related Applications
Frequently Asked Questions
MP4, WebM, MKV, AVI, MOV, M4V, FLV, WMV, and 3GP. Covers virtually every video format you'll encounter.
CRF (Constant Rate Factor) controls the quality/size tradeoff. Lower values (18) = higher quality, larger file. Higher values (35) = smaller file, lower quality. 23 is a good default.
MP4 (H.264) for maximum compatibility — plays everywhere. WebM (VP9) for web use — smaller files, great browser support, royalty-free.
No. By default, FFmpeg runs via WebAssembly in your browser. On some devices, processing may use our secure server.
Yes. Under advanced options you can downscale to 1080p, 720p, or 480p. Original resolution is kept by default.