LtxApi25ImageToVideo - ComfyUI Built-in Node Documentation - ComfyUI

This node generates a professional-quality video from a starting image using an LTX 2.5 model. You describe the video content with a text prompt, select a model variant, and adjust duration, resolution, frame rate, and audio generation. An optional final frame can be supplied to define the end of the video.

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 (default: True)
`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

Note: Only one image is supported for image. If last_frame is provided, it must also contain exactly one image. The available model.resolution options may vary depending on the selected model variant.

Outputs

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

This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! Edit on GitHub

Source fingerprint (SHA-256): 13db42e5e0d4237424b30b960ec12f5dd16808d21b85e100e5861c095b351c79