EmptyHunyuanVideo15Latent - ComfyUI Built-in Node Documentation

Complete documentation for the EmptyHunyuanVideo15Latent node in ComfyUI. Learn its inputs, outputs, parameters and usage.

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This node creates an empty latent tensor specifically formatted for use with the HunyuanVideo 1.5 model. It generates a blank starting point for video generation by allocating a tensor of zeros with the correct channel count and spatial dimensions for the model’s latent space.

Inputs

Parameter	Data Type	Required	Range	Description
width	INT	Yes	-	The width of the video frame in pixels.
height	INT	Yes	-	The height of the video frame in pixels.
length	INT	Yes	-	The number of frames in the video sequence.
batch_size	INT	No	-	The number of video samples to generate in a batch (default: 1).

Note: The spatial dimensions of the generated latent tensor are calculated by dividing the input width and height by 16. The temporal dimension (frames) is calculated as ((length - 1) // 4) + 1.

Outputs

Output Name	Data Type	Description
samples	LATENT	An empty latent tensor with dimensions suitable for the HunyuanVideo 1.5 model. The tensor has a shape of [batch_size, 32, frames, height//16, width//16].