UnsamplerHookProvider

ImpactPack/Upscale

UnsamplerHookProvider

Example

JSON Example

{
  "class_type": "UnsamplerHookProvider",
  "inputs": {
    "model": [
      "node_id",
      0
    ],
    "steps": 25,
    "start_end_at_step": 21,
    "end_end_at_step": 24,
    "cfg": 1,
    "sampler_name": "euler",
    "scheduler": "simple",
    "normalize": "disable",
    "positive": [
      "node_id",
      0
    ],
    "negative": [
      "node_id",
      0
    ],
    "schedule_for_iteration": "simple"
  }
}

This example shows required inputs only. Connection values like ["node_id", 0] should reference actual node IDs from your workflow.

Inputs

Name	Type	Status	Constraints	Default
model	MODEL	required	-	-
steps	INT	required	min: 1, max: 10000	25
start_end_at_step	INT	required	min: 0, max: 10000	21
end_end_at_step	INT	required	min: 0, max: 10000	24
cfg	FLOAT	required	min: 0, max: 100	1
sampler_name	ENUM 44 options euler euler_cfg_pp euler_ancestral euler_ancestral_cfg_pp heun heunpp2 exp_heun_2_x0 exp_heun_2_x0_sde dpm_2 dpm_2_ancestral lms dpm_fast dpm_adaptive dpmpp_2s_ancestral dpmpp_2s_ancestral_cfg_pp dpmpp_sde dpmpp_sde_gpu dpmpp_2m dpmpp_2m_cfg_pp dpmpp_2m_sde dpmpp_2m_sde_gpu dpmpp_2m_sde_heun dpmpp_2m_sde_heun_gpu dpmpp_3m_sde dpmpp_3m_sde_gpu ddpm lcm ipndm ipndm_v deis res_multistep res_multistep_cfg_pp res_multistep_ancestral res_multistep_ancestral_cfg_pp gradient_estimation gradient_estimation_cfg_pp er_sde seeds_2 seeds_3 sa_solver sa_solver_pece ddim uni_pc uni_pc_bh2	required	-	-
scheduler	ENUM 9 options simple sgm_uniform karras exponential ddim_uniform beta normal linear_quadratic kl_optimal	required	-	-
normalize	ENUM 2 options disable enable	required	-	-
positive	CONDITIONING	required	-	-
negative	CONDITIONING	required	-	-
schedule_for_iteration	ENUM 1 options simple	required	-	-

Outputs

Index	Name	Type	Is List	Connection Reference
0	PK_HOOK	PK_HOOK	No	["{node_id}", 0]

How to connect to these outputs

To connect another node's input to an output from this node, use the connection reference format:

["node_id", output_index]

Where node_id is the ID of this UnsamplerHookProvider node in your workflow, and output_index is the index from the table above.

Example

If this node has ID "5" in your workflow:

• PK_HOOK (PK_HOOK): ["5", 0]

Package: comfyui-impact-pack