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FLUX Video Upscale is Black Forest Labs’ FLUX 3 powered super-resolution tool for video, available in ComfyUI as a partner node. It upscales clips to 1080p, 2K, or 4K while keeping the source aspect ratio and its audio track.

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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

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Example outputs

Upscaling an existing clip while keeping its aspect ratio and audio track:

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Use it

FLUX Video Upscale workflow

Run the video upscaling workflow in ComfyUI, locally or on Comfy Cloud

Call it from code

Call it over HTTP through Comfy Router, with copy-paste Python, TypeScript and cURL snippets
Both paths run on the same Comfy account and are billed in the same credits. See Partner Nodes pricing for per-model rates and Concurrency limits for how many requests you can have in flight.