What FLUX Video Upscale is good at
- Upscale to 4K: Raises video resolution to 1080p, 2K, or 4K in a single API call
- Two modes: Precise mode preserves the source exactly; creative mode restores and invents fine detail
- Audio preserved: The output keeps the source clip’s audio track
- Up to 20 seconds: Accepts clips up to 20 seconds at up to 2560x1440 source resolution
Example outputs
Upscaling an existing clip while keeping its aspect ratio and audio track:Use it in ComfyUI
FLUX Video Upscale workflow
Run the video upscaling workflow in ComfyUI, locally or on Comfy Cloud