LTXVScheduler - ComfyUI Built-in Node Documentation

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

The LTXVScheduler node generates sigma values for custom sampling processes. It calculates noise schedule parameters based on the number of tokens in the input latent and applies a sigmoid transformation to create the sampling schedule. The node can optionally stretch the resulting sigmas to match a specified terminal value.

Inputs

Parameter	Description	Data Type	Required	Range
steps	Number of sampling steps (default: 20)	INT	Yes	1-10000
max_shift	Maximum shift value for sigma calculation (default: 2.05)	FLOAT	Yes	0.0-100.0
base_shift	Base shift value for sigma calculation (default: 0.95)	FLOAT	Yes	0.0-100.0
stretch	Stretch the sigmas to be in the range [terminal, 1] (default: True)	BOOLEAN	Yes	True/False
terminal	The terminal value of the sigmas after stretching (default: 0.1)	FLOAT	Yes	0.0-0.99
latent	Optional latent input used to calculate token count for sigma adjustment	LATENT	No	-

Note: The latent parameter is optional. When not provided, the node uses a default token count of 4096 for calculations.

Outputs

Output Name	Description	Data Type
sigmas	Generated sigma values for the sampling process	SIGMAS

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