arkennemasis fal · Flux Video Upscale · $0.14-0.79/s
Upscale videos to 1080p, 2K, or 4K via API. FLUX 3 powered super-resolution with a precise mode and a creative detail-enhancement mode. Pricing (from fal, 2026-09-29): Billing is calculated per second of output video, by resolution and mode. In precise mode, 1080p costs $0.14 per second, 2K costs $0.25 per second, and 4K costs $0.55 per second. Creative mode costs more at each tier: $0.20, $0.35, and $0.79 per second respectively. A 10-second 1080p clip runs $1.40 in precise mode or $2.00 in creative mode. You are charged for the delivered output only. Model page: https://fal.ai/models/blackforestlabs/flux-video-upscale Key: FAL_KEY in the .env next to run_nvidia_gpu.bat. Results are saved in output/fal/blackforestlabs_flux-video-upscale/.
- video
- video
- video_path
- info
Inputs (9)
| Name | Type | Default | Description |
|---|---|---|---|
| video | VIDEO | URL of the MP4 video to upscale. The video must be at most 20 seconds and 50 MB. | |
| upscale_factor | FLOAT | 2.001.5–3 | Output scaling factor. The source aspect ratio is preserved. |
| creativity | COMBO | 1 | Use 0 for a source-faithful upscale or 1 for creative detail enhancement. |
| prompt | STRING | Optional description used to guide creative detail enhancement. Empty leaves it out. | |
| safety_tolerance | INT | 20–4 | Moderation strictness. Lower values are stricter. |
| max_cost_usdopt | FLOAT | 20.00–100000 | Safety cap. If the estimated cost of this run is above this many US dollars the node stops BEFORE sending anything to fal. 0 = no cap. |
| reuse_identical_runopt | BOOLEAN | true | If these exact inputs (the settings AND the same pictures/clips/audio) were already paid for and the files are still in output/fal, return them instead of paying again - also after a ComfyUI restart. Turn off for a fresh take with the same settings. |
| extra_jsonopt | STRING | Advanced: a JSON object merged into the request last, for any fal field this node has no box for. Example: {"seed": 7}. Leave empty normally. | |
| max_concurrentopt | INT | 11–32 | How many paid fal calls may run at the same time in one run, across every fal node. 1 (default) = one after another. This node starts its paid part only while fewer than this many fal calls are running. Once any fal node fails, the ones still waiting are not started, so nothing more is billed. |
Outputs (3)
| Name | Type | Description |
|---|---|---|
| video | VIDEO | — |
| video_path | STRING | — |
| info | STRING | JSON: request id, cost estimate, saved files and fal's full answer. |