LTX Video Upscale - ComfyUI Built-in Node Documentation

Upscales a video to 1080p, 4K or 8K, keeping its aspect ratio, frame rate and audio.

Inputs

Parameter	Description	Data Type	Required	Range
`video`	Video to upscale, with a short side of at least 480 pixels and at most 7680x4320 in either orientation. Up to 2401 frames for 1080p, 601 frames for 4K and 241 frames for 8K.	VIDEO	Yes	-
`resolution`	Output size, as large as fits in 1920x1080, 3840x2160 or 7680x4320 and turned for portrait videos. Default: `"4k"`.	COMBO	Yes	`"1080p"` `"4k"` `"8k"`
`seed`	Controls whether the node re-runs; results are non-deterministic regardless of the seed. Default: 42.	INT	No	0 to 4294967295

Output Name	Description	Data Type
`video`	The upscaled video, with its audio kept.	VIDEO

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