LtxvApiImageToVideo - ComfyUI Built-in Node Documentation

The LTXV Image To Video node generates a professional-quality video from a single starting image. It uses an external API to create a video sequence based on your text prompt, allowing you to customize the duration, resolution, and frame rate.

Inputs

Parameter	Description	Data Type	Required	Range
`image`	First frame to be used for the video.	IMAGE	Yes	-
`model`	The AI model to use for video generation. The “Pro” model is optimized for quality, while the “Fast” model is optimized for speed.	COMBO	Yes	`"LTX-2 (Pro)"` `"LTX-2 (Fast)"`
`prompt`	A text description that guides the content and motion of the generated video.	STRING	Yes	-
`duration`	The length of the video in seconds (default: 8).	COMBO	Yes	`6` `8` `10` `12` `14` `16` `18` `20`
`resolution`	The output resolution of the generated video.	COMBO	Yes	`"1920x1080"` `"2560x1440"` `"3840x2160"`
`fps`	The frames per second for the video (default: 25).	COMBO	Yes	`25` `50`
`generate_audio`	When true, the generated video will include AI-generated audio matching the scene (default: False).	BOOLEAN	No	-

Important Constraints:

The image input must contain exactly one image.
The prompt must be between 1 and 10,000 characters long.
If you select a duration longer than 10 seconds, you must use the “LTX-2 (Fast)” model, a “1920x1080” resolution, and 25 FPS. This combination is required for longer videos.

Outputs

Output Name	Description	Data Type
`video`	The generated video file.	VIDEO

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Inputs

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