Upscaling Low-Res Video to 4K in the Browser with FlashVSR

If you've ever had a great clip ruined by low resolution or heavy compression, AI video super-resolution is worth a look.

FlashVSR is an online AI video upscaler built on OpenImagingLab's FlashVSR research (streaming / single-step diffusion video super-resolution).

How it works

1. Upload an MP4
2. Pick a target resolution: 720p, 1080p, 2K or 4K
3. Download the enhanced MP4

Processing runs in the cloud, so there's no local GPU setup.

What it focuses on

• Detail reconstruction – rebuilds natural texture
• Artifact reduction – cleans up compression junk
• Temporal consistency – stable motion across frames

It's handy for AI-generated clips, archival footage and social exports that need a cleaner finish. New accounts get limited free trial credits (watermarked / lower-res / non-commercial); paid plans add higher resolution, private generation and commercial use.

Try it: https://flashvsr.com/