ComfyUI Node: Load MotionBrush

Load MotionBrush:

The Load MotionBrush node is designed to facilitate the loading of pre-saved motion brush data, which is typically stored in .npy files. This node is essential for AI artists who work with motion data, as it allows for the seamless integration of pre-existing motion brush data into their projects. By loading this data, you can leverage complex motion patterns and effects without having to generate them from scratch, thus saving time and effort. The primary function of this node is to read the specified .npy file and convert its contents into a format that can be used in subsequent nodes for visualization or further processing.

Load MotionBrush Input Parameters:

file_path

The file_path parameter specifies the location of the .npy file that contains the motion brush data you wish to load. This parameter is crucial as it directs the node to the exact file that needs to be read. The function of this parameter is to ensure that the correct motion brush data is loaded into the system. The impact of this parameter on the node's execution is significant; an incorrect file path will result in an error, preventing the node from functioning correctly. The default value for this parameter is "smoke/smoke1/smoke1.npy", but it can be set to any valid path where your .npy file is stored. There are no minimum or maximum values for this parameter, but it must be a valid file path string.

Load MotionBrush Output Parameters:

MotionBrush

The MotionBrush output parameter represents the loaded motion brush data in a format that can be used by other nodes in your workflow. This output is crucial as it serves as the foundation for any subsequent operations involving motion data, such as visualization or further processing. The MotionBrush data is typically a multi-dimensional tensor that contains the motion vectors or patterns stored in the .npy file. Understanding this output is essential for effectively utilizing the loaded motion data in your projects.

Load MotionBrush Usage Tips:

• Ensure that the file_path parameter is set to the correct location of your .npy file to avoid errors during loading.
• Use the MotionBrush output in conjunction with nodes like VizMotionBrush to visualize the loaded motion data and verify its correctness.
• Organize your motion brush files in a structured directory to make it easier to manage and load different motion patterns.

Load MotionBrush Common Errors and Solutions:

FileNotFoundError: [Errno 2] No such file or directory: '<file_path>'

• Explanation: This error occurs when the specified file path does not exist or is incorrect.
• Solution: Double-check the file_path parameter to ensure it points to a valid .npy file. Verify the file's existence and correct any typos in the path.

ValueError: Cannot load file containing pickled data when allow_pickle=False

• Explanation: This error occurs if the .npy file contains pickled data and the loading function does not allow pickling.
• Solution: Ensure that the .npy file does not contain pickled data or modify the loading function to allow pickling if it is safe to do so.

TypeError: expected str, bytes or os.PathLike object, not list

• Explanation: This error occurs if the file_path parameter is not provided as a string.
• Solution: Ensure that the file_path parameter is a valid string representing the path to the .npy file.