Black Forest Labs/flux-video-upscaler/Released Aug 2026

FLUX Video Upscaler

Video super-resolution to 4K, precise or creative

Commercial use

Video

About FLUX Video Upscaler

FLUX Video Upscaler raises the resolution of an existing clip using FLUX 3 super-resolution, up to 1080p, 2K, or 4K. It takes MP4 input up to 20 seconds, 50 MB and 2560x1440, enlarges it by 1.5x to 3x while keeping the aspect ratio and the source audio, and caps output frames near 14 megapixels, so a large source may land below the requested factor.

Two modes trade fidelity against detail. Precise stays faithful to the source, which suits footage that must match a reference. Creative synthesizes detail the original never had and takes an optional prompt to steer what it invents, which suits stylized or generated material. Creative costs more per second at every resolution.

See what this model can do

A handful of real prompts and their outputs.

Creative 3x

Dawn Balloon Launch

"Creative mode at 3x adds crisp fabric panels, rigging lines and crew silhouettes to a 480p clip."

Precise 2.25x

Fiddler Crab

"Precise mode sharpens leg bristles, eyes and wet mud highlights without changing the animal."

Precise 2.25x

Hill Street Tram

"Restores window frames, balcony railings, cobblestones and overhead wires faithfully to the source."

Creative 2.25x

Silk in the Wind

"Creative mode clears compression blocking and invents a fine silk weave guided by the prompt."

Creative 2.25x

Dandelion Seeds

"Creative mode resolves individual seed filaments and parachutes from a 480p macro shot."

Precise 2.25x

Dawn Surf

"Precise mode sharpens spray, wave texture and the surfer without altering the action."

Creative 2.25x

Bees on Lavender

"Adds bee fuzz, wing veins and lavender florets that the 480p source only hints at."

Precise 3x

Snowy Pine Forest

"A 3x precise upscale to 2K that restores needles, bark and snow drifts faithfully."

Precise 2.25x

Courtyard Leaves

"Keeps fast-moving leaves stable while sharpening stonework, arches and the fountain."

Ready to build with FLUX Video Upscaler?

Try FLUX Video Upscaler in the Workbench to prompt it, compare outputs, and iterate on prompts without writing any code. When you're ready to ship, call the same model from our API and build your own apps on top of it.

curl -sSf -X POST https://hub.oxen.ai/api/ai/videos/generate \
    -H "Content-Type: application/json" \
    -H "Authorization: Bearer $OXEN_API_KEY" \
    -d '{
  "model": "flux-video-upscaler",
  "input_video": "https://hub.oxen.ai/api/repos/ox/Oxen-AI-Assets/file/main/videos/waterfall.mp4",
  "upscale_factor": 2,
  "creativity": 0,
  "safety_tolerance": 2
}'

Request parameters

Every field FLUX Video Upscaler accepts in the request body. See the API reference for response formats.

POSThttps://hub.oxen.ai/api/ai/videos/generate

Field	Type	Required	Default	Description
`input_video`	`string` uri	Yes	—	Clip to upscale. MP4, up to 20 seconds, 50 MB and 2560x1440. Longer or larger clips are rejected rather than trimmed.
`prompt`	`string` nullable	No	—	Optional steer for the detail Creative mode invents. Ignored in Precise mode.
`upscale_factor`	`number`	No	`2`	How much to enlarge the clip, from 1.5x to 3x, keeping its aspect ratio. Cost follows the resolution this lands on. Range: 1.5 – 3
`creativity`	`integer`	No	`0`	Precise stays faithful to the source. Creative invents detail the original lacks and costs more per second. `01`
`safety_tolerance`	`integer`	No	`2`	Safety filter strictness, 0 is strictest. `01234`

Model JSON Video generation reference Async queue Models endpoint