WanImageToVideoApi - ComfyUI Built-in Node Documentation

Complete documentation for the WanImageToVideoApi node in ComfyUI. Learn its inputs, outputs, parameters and usage.

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The Wan Image to Video node generates video content starting from a single input image and a text prompt. It creates video sequences by extending the initial frame according to the provided description, with options to control video quality, duration, and audio integration.

Inputs

Parameter	Data Type	Required	Range	Description
model	COMBO	Yes	”wan2.5-i2v-preview" "wan2.5-i2v-preview”	Model to use (default: “wan2.5-i2v-preview”)
image	IMAGE	Yes	-	Input image that serves as the first frame for video generation
prompt	STRING	Yes	-	Prompt used to describe the elements and visual features, supports English/Chinese (default: empty)
negative_prompt	STRING	No	-	Negative text prompt to guide what to avoid (default: empty)
resolution	COMBO	No	”480P" "720P" "1080P”	Video resolution quality (default: “480P”)
duration	INT	No	5-10	Available durations: 5 and 10 seconds (default: 5)
audio	AUDIO	No	-	Audio must contain a clear, loud voice, without extraneous noise, background music
seed	INT	No	0-2147483647	Seed to use for generation (default: 0)
generate_audio	BOOLEAN	No	-	If there is no audio input, generate audio automatically (default: False)
prompt_extend	BOOLEAN	No	-	Whether to enhance the prompt with AI assistance (default: True)
watermark	BOOLEAN	No	-	Whether to add an “AI generated” watermark to the result (default: True)

Constraints:

• Exactly one input image is required for video generation
• Duration parameter only accepts values of 5 or 10 seconds
• When audio is provided, it must be between 3.0 and 29.0 seconds in duration

Outputs

Output Name	Data Type	Description
output	VIDEO	Generated video based on the input image and prompt