ClarityCrystalVideoUpscaleNode - ComfyUI Built-in Node Documentation

Upscale a video with Clarity AI’s Crystal Video Upscaler, a high-fidelity upscaler that stays faithful to the source. The clip is uploaded, upscaled by the factor you set, and returned as a video. The source clip is limited to 9 megapixels per frame (for example 4000x2250) and to 360 megapixel-seconds per clip. A clip that exceeds either limit is rejected with a ValueError instead of being upscaled less. The only automatic reduction is on the output side: the factor is lowered when it would push a side of the result past 5120 pixels. Selecting a model reveals the parameters specific to that model.

Inputs

Parameter	Description	Data Type	Required	Range
`model`	Model to use. Selecting a model reveals the parameters specific to it: `video` and `scale_factor`.	DYNAMIC_COMBO	Yes	`"crystal-video-upscaler"`
`video`	The video to upscale.	VIDEO	Yes	N/A
`scale_factor`	Factor to multiply the video width and height by. The factor is lowered automatically when it would push a side of the output past 5120 pixels. A source frame over 9 megapixels or a clip past the 360 megapixel-second budget is rejected with an error instead of being upscaled less (default: 2.0).	FLOAT	Yes	1.0 to 200.0 (step 0.1)

Note: The source clip may be at most 5120 pixels on each side and at most 9 megapixels per frame. The maximum length depends on the frame size and frame rate: it is 360 megapixel-seconds divided by the frame pixels and by ceil(fps / 30), the 30-fps cost multiplier, so a 1080p clip at 30 fps can run up to about 173 seconds. Clips above 30 fps cost 2x, above 60 fps 3x, and so on.

Outputs

Output Name	Description	Data Type
`video`	The upscaled video.	VIDEO

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