PreSampling (NoiseIn) (samplerSettingsNoiseIn) - ComfyUI-Easy-Use

PreSampling (NoiseIn) (class samplerSettingsNoiseIn) is a pipeline pre-sampling node in the EasyUse/PreSampling category. It prepares sampling settings for a downstream sampler and adds a controllable noise-injection stage to the latent. It takes one PIPE_LINE, applies the configured sampler settings, optionally injects noise into a latent, and returns the updated pipeline. It does not execute sampling itself; feed its output into a KSampler or another node that consumes a PIPE_LINE.

Description

This node is used before a sampler to override the sampling behavior carried in the pipeline. In addition to the usual steps, cfg, sampler_name, scheduler, denoise, and seed settings, it provides a noise-injection path controlled by factor. This lets you add a controlled amount of noise to the latent before the sampler runs, with optional separate controls for the noise seed and the target latent.

The node does not produce a sampled image. It outputs an updated PIPE_LINE containing the sampling settings and any supplied noise/latent information.

Inputs

Required

Input	Type	Default	Description
`pipe`	`PIPE_LINE`	—	The pipeline carrying the model, conditioning, latent, and existing sampler settings.
`factor`	`FLOAT`	0.1	Strength of the noise injected into the latent before sampling. Range 0.0 to 1.0. 0.0 adds no noise; 1.0 applies full-strength noise.
`steps`	`INT`	20	Number of sampling steps to use. Range 1 to 10000.
`cfg`	`FLOAT`	8	Classifier-free guidance scale. Range 0 to 100.
`sampler_name`	`COMBO`	—	Sampler algorithm to use. Select from the available ComfyUI sampler names.
`scheduler`	`COMBO`	—	Noise schedule / scheduler to use for the sampler.
`denoise`	`FLOAT`	1	Amount of denoising to perform. Range 0.0 to 1.0. Lower values preserve more of the original latent content.
`seed`	`INT`	—	Seed for the sampling operation.

Optional

Input	Type	Default	Description
`optional_noise_seed`	`INT`	—	A separate seed used for the noise-injection stage. Connect this when you want to control the injected noise independently from the main sampling `seed`.
`optional_latent`	`LATENT`	—	An optional latent to use as the target for noise injection. If omitted, the latent already stored in the pipeline is used.

Outputs

Output	Type	Description
`pipe`	`PIPE_LINE`	The updated pipeline with the configured sampling settings and optional noise-injection inputs applied. Pass this into a sampler node that accepts a `PIPE_LINE`.

Usage Notes

Place this node before the actual sampler node in a PIPE_LINE workflow.
Use factor to control how much noise is mixed into the initial latent. Small values produce subtle variation; higher values push the latent closer to pure noise.
denoise and factor work together: denoise controls how much of the latent is regenerated while factor controls how much noise is introduced before sampling starts.
Connect optional_noise_seed when you need to reproduce or vary the injected noise without changing the main sampler seed.
Connect optional_latent when you want to inject noise into a specific latent rather than the one stored in the pipe, such as an encoded image or a custom latent prepared upstream.
The returned pipe preserves the other contents of the original pipeline; only sampling settings and noise-related values are updated.

PreSampling (NoiseIn)(samplerSettingsNoiseIn)

sampler Settings Noise In