EmptyLTXVLatentVideo - ComfyUI Built-in Node Documentation - ComfyUI

The EmptyLTXVLatentVideo node creates an empty (zero-filled) latent video tensor using the width, height, length, and batch size you specify. It provides a blank starting point for LTXV video generation workflows, with the latent dimensions automatically compressed relative to the requested video size.

Inputs

Parameter	Description	Data Type	Required	Range
`width`	The width of the latent video tensor (default: 768, step: 32)	INT	Yes	64 to MAX_RESOLUTION
`height`	The height of the latent video tensor (default: 512, step: 32)	INT	Yes	64 to MAX_RESOLUTION
`length`	The number of frames in the latent video (default: 97, step: 8)	INT	Yes	1 to MAX_RESOLUTION
`batch_size`	The number of latent videos to generate in a batch (default: 1)	INT	Yes	1 to 4096

Note: The latent video is compressed compared to the requested dimensions: the spatial dimensions (width and height) are divided by 32, and the frame count (length) is divided by 8 and rounded up to the nearest whole number. The step values for width, height, and length help keep these divisions even.

Outputs

Output Name	Description	Data Type
`samples`	The generated empty latent tensor with zero values in the specified dimensions, along with a spatial downscale ratio of 32	LATENT

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