ComfyUI Node: FreeU v2

FreeU v2:

SeargeFreeU is a versatile node designed to enhance the flexibility and control over the FreeU (Free Utility) settings in your AI art generation workflow. This node allows you to select from various predefined FreeU modes or customize your own settings, providing fine-tuned control over parameters that influence the behavior and output of your models. By adjusting these parameters, you can achieve different artistic effects and optimize the performance of your models for specific tasks. The main goal of SeargeFreeU is to offer a user-friendly interface for managing these settings, making it easier for AI artists to experiment with and refine their creative processes.

FreeU v2 Input Parameters:

freeu_mode

This parameter allows you to select the mode of operation for the FreeU settings. The available modes include predefined options such as FREEU_DEFAULT, FREEU_SUBTLE, FREEU_SD_XL, FREEU_SD_XL_V2, FREEU_DETAILED, FREEU_SD_2_1, and FREEU_SD_1_5. Each mode adjusts the internal parameters (b1, b2, s1, s2) to achieve different effects. For example, FREEU_DEFAULT provides a balanced setting, while FREEU_DETAILED enhances detail in the output. This parameter is essential for quickly switching between different configurations without manually adjusting each parameter.

b1

This is a floating-point parameter that influences the first base setting in the FreeU configuration. It has a default value of 1.3, with a minimum of 1.0 and a maximum of 1.4, adjustable in steps of 0.01. Adjusting b1 can impact the overall strength and intensity of the base model's influence on the final output.

b2

This floating-point parameter controls the second base setting in the FreeU configuration. It has a default value of 1.4, with a minimum of 1.2 and a maximum of 1.6, adjustable in steps of 0.01. Modifying b2 can further refine the balance and interaction between different model components.

s1

This parameter is a floating-point value that affects the first subtlety setting in the FreeU configuration. It has a default value of 0.9, with a range from 0.0 to 1.0, adjustable in steps of 0.05. Changing s1 can alter the subtle nuances and fine details in the generated output.

s2

This floating-point parameter controls the second subtlety setting in the FreeU configuration. It has a default value of 0.2, with a range from 0.0 to 1.0, adjustable in steps of 0.05. Adjusting s2 can influence the finer aspects of the model's output, allowing for more detailed customization.

freeu_version

This parameter specifies the version of the FreeU settings to be used. The available options include FREEU_V1 and FREEU_V2. Each version applies different algorithms and adjustments to the FreeU parameters, providing varied effects and optimizations for the generated output.

data

This optional parameter accepts a data stream of type SRG_DATA_STREAM. It allows you to input additional data that can be used in conjunction with the FreeU settings, enabling more complex and customized workflows.

FreeU v2 Output Parameters:

data

The output parameter data returns a data stream of type SRG_DATA_STREAM. This stream contains the configured FreeU settings, including the selected mode, base and subtlety parameters, and version. This output can be used in subsequent nodes to apply the FreeU settings to your models, ensuring that the desired configurations are consistently applied throughout your workflow.

FreeU v2 Usage Tips:

• Experiment with different freeu_mode settings to quickly see how each mode affects your output. This can save time compared to manually adjusting individual parameters.
• Use the b1 and b2 parameters to control the overall strength and balance of your model's influence, while s1 and s2 can be used to fine-tune the details and nuances.
• If you have specific requirements or want to achieve a unique effect, consider using the CUSTOM mode and manually adjusting the b1, b2, s1, and s2 parameters.
• Keep in mind the freeu_version parameter, as different versions can provide varied results. Experiment with both FREEU_V1 and FREEU_V2 to find the best fit for your needs.

FreeU v2 Common Errors and Solutions:

Error: "Invalid freeu_mode selected"

• Explanation: This error occurs when an unsupported or incorrect freeu_mode is selected.
• Solution: Ensure that you select a valid freeu_mode from the available options: FREEU_DEFAULT, FREEU_SUBTLE, FREEU_SD_XL, FREEU_SD_XL_V2, FREEU_DETAILED, FREEU_SD_2_1, FREEU_SD_1_5, or CUSTOM.

Error: "Parameter out of range"

• Explanation: This error occurs when one of the parameters (b1, b2, s1, s2) is set outside its allowed range.
• Solution: Check the minimum and maximum values for each parameter and ensure that your input falls within these ranges. For example, b1 should be between 1.0 and 1.4.

Error: "Missing required data stream"

• Explanation: This error occurs when the optional data parameter is required but not provided.
• Solution: If your workflow requires additional data input, ensure that you provide a valid SRG_DATA_STREAM to the data parameter. If not needed, you can leave this parameter empty.