ComfyUI Node: FLUX Resolutions

FLUX Resolutions:

The FLUXResolutions node is designed to facilitate the selection and manipulation of image resolutions within the ComfyUI framework. It provides a user-friendly interface for choosing from predefined resolution sizes or specifying custom dimensions, making it an essential tool for AI artists who need precise control over their image outputs. By allowing users to select a resolution and apply a multiplication factor, this node offers flexibility in scaling images to desired sizes, which is particularly useful in scenarios where specific resolution requirements are needed for different artistic projects. The node's ability to handle both predefined and custom sizes ensures that users can easily adapt their workflows to meet various creative demands, enhancing the overall efficiency and effectiveness of the image generation process.

FLUX Resolutions Input Parameters:

size_selected

This parameter allows you to choose from a list of predefined resolution sizes. Each option is presented in a format that includes a key and a descriptive name, making it easy to identify the desired resolution. Selecting a predefined size ensures consistency and accuracy in your image outputs, especially when working with standard dimensions.

multiply_factor

The multiply_factor is an integer that scales the selected resolution by a specified factor. The default value is 1, meaning no scaling is applied. You can increase this factor to enlarge the image dimensions proportionally. The minimum value is 1, ensuring that the resolution is not reduced below its original size.

manual_width

This parameter allows you to manually specify the width of the image in pixels. If set to a value greater than 0, it overrides the width of the selected predefined size. The default value is 0, indicating that the predefined size should be used unless a custom width is specified. This flexibility is useful for creating images with non-standard dimensions.

manual_height

Similar to manual_width, this parameter lets you manually define the height of the image in pixels. A value greater than 0 will override the height of the selected predefined size. The default value is 0, which means the predefined size is used unless a custom height is provided. This option is beneficial for tailoring the image height to specific project needs.

FLUX Resolutions Output Parameters:

width

The width output parameter represents the final width of the image after applying the selected resolution and any scaling factors. It is an integer value that reflects the actual width in pixels, providing a clear indication of the image's horizontal dimension.

height

The height output parameter indicates the final height of the image, calculated based on the selected resolution and scaling factors. This integer value represents the vertical dimension in pixels, ensuring that you have a precise understanding of the image's size.

FLUX Resolutions Usage Tips:

• To maintain consistency across multiple images, use the size_selected parameter to choose a predefined resolution that matches your project's requirements.
• Utilize the multiply_factor to quickly scale images up or down while preserving the aspect ratio, which is particularly useful for creating variations of the same artwork.
• When working with custom dimensions, ensure that both manual_width and manual_height are set to values greater than 0 to override the predefined sizes effectively.

FLUX Resolutions Common Errors and Solutions:

FileNotFoundError: [Errno 2] No such file or directory: 'sizes.json'

• Explanation: This error occurs when the sizes.json file, which contains the predefined resolution sizes, is missing or not located in the expected directory.
• Solution: Ensure that the sizes.json file is present in the same directory as the FLUXResolutions.py script. If it's missing, recreate the file with the necessary resolution data.

KeyError: '<size_selected>'

• Explanation: This error happens when the selected size key does not exist in the sizes.json file.
• Solution: Verify that the size_selected value matches one of the keys in the sizes.json file. If necessary, update the file to include the missing key or select a valid size.

ValueError: multiply_factor must be greater than or equal to 1

• Explanation: This error is raised when the multiply_factor is set to a value less than 1, which is not allowed.
• Solution: Adjust the multiply_factor to be 1 or greater to ensure valid scaling of the image dimensions.