LtxApi25ImageToVideo - ComfyUI Built-in Node Documentation - ComfyUI

This node generates a professional-quality video based on a starting image. You can choose the LTX 2.5 model variant, describe the video with a text prompt, adjust duration, resolution, frame rate, and audio generation, and optionally provide a final frame. The output is a video that starts from the provided image.

Inputs

Parameter	Description	Data Type	Required	Range
`image`	First frame to be used for the video.	IMAGE	Yes	Exactly one image
`model`	Model settings group. Selects the LTX 2.5 model variant to use.	COMBO	Yes	”LTX-2.5 (Fast)" "LTX-2.5 (Pro)“
`model.duration`	Length of the generated video in seconds.	INT	Yes	Integer
`model.resolution`	Resolution of the generated video. Available options may depend on the selected model.	COMBO	Yes	”1280x720" "720x1280" "1920x1080" "1080x1920" "2560x1440" "1440x2560" "3840x2160" "2160x3840”
`model.fps`	Frame rate of the generated video.	INT	Yes	Integer (default: 25)
`model.generate_audio`	Whether to generate audio for the video.	BOOLEAN	Yes	True False
`prompt`	Text description of the video content to generate. Must be between 1 and 10000 characters.	STRING	Yes	1 to 10000 characters
`seed`	Seed value for reproducible generation. Using the same seed with the same settings produces the same result.	INT	Yes	Integer (default: 42)
`last_frame`	Last frame to be used for the video.	IMAGE	No	Exactly one image

Outputs

Output Name	Description	Data Type
`video`	The generated video based on the provided start image and generation settings.	VIDEO

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