WanSoundImageToVideoExtend - ComfyUI Built-in Node Documentation

The WanSoundImageToVideoExtend node extends an existing video latent by generating additional frames, optionally guided by audio, a reference image, and a control video. It takes a starting video latent and produces a longer video sequence, using the provided conditioning and audio cues to influence the new content.

Inputs

Parameter	Description	Data Type	Required	Range
`positive`	Positive conditioning prompts that guide what the video should include	CONDITIONING	Yes	-
`negative`	Negative conditioning prompts that specify what the video should avoid	CONDITIONING	Yes	-
`vae`	Variational Autoencoder used for encoding and decoding video frames	VAE	Yes	-
`length`	Total number of frames to generate for the video sequence (default: 77, step: 4)	INT	Yes	1 to MAX_RESOLUTION
`video_latent`	Initial video latent representation that serves as the starting point for extension. The width, height, batch size, and frame offset are derived from this latent.	LATENT	Yes	-
`audio_encoder_output`	Optional audio embeddings that can influence video generation based on sound characteristics. When provided, the audio is interpolated and used to create an audio embedding bucket that is added to the conditioning.	AUDIOENCODEROUTPUT	No	-
`ref_image`	Optional reference image that provides visual guidance for the video generation. The image is upscaled to match the target dimensions and encoded into a latent, which is then added to both positive and negative conditioning.	IMAGE	No	-
`control_video`	Optional control video that can guide the motion and style of the generated video. The video is upscaled, encoded, and added to both positive and negative conditioning. The control video is truncated to the specified `length`.	IMAGE	No	-

Outputs

Output Name	Description	Data Type
`positive`	Processed positive conditioning with video context applied, including audio embeddings, reference latents, reference motion, and control video if provided	CONDITIONING
`negative`	Processed negative conditioning with video context applied, including audio embeddings (zeroed out), reference latents, reference motion, and control video if provided	CONDITIONING
`latent`	Generated video latent representation containing the extended video sequence, initialized as zeros with dimensions derived from the input `video_latent` and the target `length`	LATENT

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WanSoundImageToVideo - ComfyUI Built-in Node Documentation

WanTrackToVideo - ComfyUI Built-in Node Documentation

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