Wan2ImageToVideoApi - ComfyUI Built-in Node Documentation

The Wan 2.7 Image to Video node generates a video starting from a first-frame image. You can optionally provide a last-frame image to create a transition between the two, or provide an audio file to guide the video’s motion and timing. The node uses an AI model to animate the scene based on your text description.

Inputs

Parameter	Description	Data Type	Required	Range
`model`	The AI model to use for video generation.	COMBO	Yes	`"wan2.7-i2v"`
`model.prompt`	A text description of the elements and visual features you want in the video. Supports English and Chinese.	STRING	Yes	-
`model.negative_prompt`	A text description of elements or features you want the model to avoid.	STRING	Yes	-
`model.resolution`	The resolution of the output video.	COMBO	Yes	`"720P"` `"1080P"`
`model.duration`	The length of the generated video in seconds (default: 5).	INT	Yes	2 to 15
`first_frame`	The image to use as the first frame of the video. The output video’s aspect ratio is derived from this image.	IMAGE	Yes	-
`last_frame`	An optional image to use as the last frame. When provided, the model generates a video that transitions from the first frame to this last frame.	IMAGE	No	-
`audio`	An optional audio file to drive the video generation, useful for lip-syncing or beat-matched motion. Duration must be between 2 and 30 seconds. If not provided, the model will generate matching background music or sound effects.	AUDIO	No	-
`seed`	A seed value to control the randomness of the generation (default: 0).	INT	Yes	0 to 2147483647
`prompt_extend`	When enabled, the node will use AI assistance to enhance your text prompt (default: True). This is an advanced setting.	BOOLEAN	Yes	-
`watermark`	When enabled, an AI-generated watermark will be added to the final video (default: False). This is an advanced setting.	BOOLEAN	Yes	-

Note: The audio input has a duration constraint. If provided, the audio file must be between 2 and 30 seconds long.

Outputs

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

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