ComfyUI

• What it is and what FilmOpen uses it for
• Pricing
• FilmOpen credit
• The plugin
• If something goes wrong

Implemented in plugin fo-cui.

What it is and what FilmOpen uses it for

ComfyUI is free software that runs image and video models on your own graphics card. FilmOpen can use a ComfyUI you already run, on this computer or a server you name, or one started for you on Salad.

Model	What it does in FilmOpen	Way of running it
Z-Image-Turbo	Makes an image from a prompt	8 GB Fast, 8 GB Quality, 24 GB Quality
FLUX.2 [klein] 4B	Edits one reference image at 1024×1024	8 GB edit
Wan 2.2 TI2V 5B	Makes about 3.4 seconds of video, without sound, from a first frame	8 GB

Pricing

ComfyUI itself is free, and FilmOpen makes no charge per render: you pay only for the machine. On your own computer that is your electricity. On a server, it’s that server’s price: on Salad, see its page.

FilmOpen credit

ComfyUI runs on your own computer or on a server you name, so FilmOpen credit doesn’t come into it. A Salad server that runs ComfyUI can be paid for with FilmOpen credit: see Salad.

The plugin

fo-cui connects FilmOpen to a ComfyUI that is already running. It doesn’t install or start ComfyUI. Download ComfyUI from comfy.org (Windows, Linux) and start it first.

Setting up.

1. Open Settings → Plugins → ComfyUI, press Configure, and allow it.
2. Under Settings on this computer, set ComfyUI server to the address ComfyUI reports. The usual local value is http://127.0.0.1:8188; a bare 127.0.0.1 lacks the scheme and port.
3. Press Check under Can it work?. This checks the server, not your model files.

Preparing a model’s files. On the plugin’s page each way of running a model has its own buttons, such as Verify files: 8 GB Fast and Download missing files: 8 GB Fast. Verify reads ComfyUI’s own model lists and checks each file’s name and size, never its content. A file of the wrong size is a mismatch to remove, never downloaded over. Download missing files asks a FilmOpen node inside ComfyUI for the first missing file, one file a press; where ComfyUI lacks the node, the first press installs it through ComfyUI-Manager and restarts ComfyUI.

Rendering. Open what you’re editing, choose Render, set Runs on to ComfyUI, and press Render once. Open the result and check it. A render is sent once; if FilmOpen loses track of it, look at the job in ComfyUI before asking again. FilmOpen never clears your queue or stops other work.

Wan 2.2 uses exactly one PNG or JPEG first frame of at most 16 MiB. The FLUX edit uses one reference image; for more, fal’s route takes up to four.

If something goes wrong

• Check can’t reach the server: check the address has its scheme and port, and that ComfyUI’s own page opens at it.
• Check passes but a render says files are missing: press Download missing files for that way of running it.
• A file has the wrong size: remove it in ComfyUI’s models folder, then download again.
• A render runs out of memory: choose a smaller way of running it; the model’s name says how much memory it needs.
• A timeout or lost answer: ComfyUI may still be working. Look at its queue before asking again.