ComfyUI Node: Load Motionctrl-SVD Camera Preset

Load Motionctrl-SVD Camera Preset:

The Load Motionctrl-SVD Camera Preset node is designed to facilitate the loading of predefined camera motion presets for use in motion control applications. This node allows you to select from a variety of camera motion options, which are then loaded from a JSON file containing the specific camera poses. By using this node, you can easily integrate complex camera movements into your projects without manually defining each pose, thus saving time and ensuring consistency. The primary goal of this node is to streamline the process of incorporating sophisticated camera motions into your AI-generated animations or visualizations, enhancing the overall quality and dynamism of your work.

Load Motionctrl-SVD Camera Preset Input Parameters:

motion_camera

This parameter allows you to select the specific camera motion preset you wish to load. The available options are predefined and can be chosen from a list of motion camera presets. Each preset corresponds to a JSON file that contains the camera poses for that particular motion. By selecting a preset, you instruct the node to load the corresponding camera poses, which will then be used in your project. This parameter is crucial as it determines the type of camera motion that will be applied, impacting the final animation or visualization. The options for this parameter are defined in the MOTION_CAMERA_OPTIONS list.

Load Motionctrl-SVD Camera Preset Output Parameters:

POINTS

This output parameter returns the camera poses as a JSON string. The data contains the specific coordinates and orientations of the camera for each frame of the animation. This output is essential for integrating the loaded camera motion into your project, as it provides the necessary information to control the camera's movement throughout the animation. By using this output, you can ensure that the camera follows the predefined motion path, resulting in a smooth and professional-looking animation.

Load Motionctrl-SVD Camera Preset Usage Tips:

• Ensure that the selected motion_camera preset matches the desired camera movement for your project to achieve the best results.
• Verify that the JSON files for the camera presets are correctly formatted and located in the specified directory to avoid loading errors.

Load Motionctrl-SVD Camera Preset Common Errors and Solutions:

FileNotFoundError: [Errno 2] No such file or directory: '.../test_camera_<motion_camera>.json'

• Explanation: This error occurs when the specified JSON file for the selected camera preset cannot be found in the directory.
• Solution: Ensure that the JSON file for the selected camera preset exists in the correct directory and is named correctly.

JSONDecodeError: Expecting value: line 1 column 1 (char 0)

• Explanation: This error indicates that the JSON file is empty or not properly formatted.
• Solution: Check the contents of the JSON file to ensure it is correctly formatted and contains valid camera pose data.

KeyError: 'motion_camera'

• Explanation: This error occurs when the motion_camera parameter is not provided or is invalid.
• Solution: Make sure to select a valid motion_camera preset from the available options.

ValueError: Invalid camera pose data

• Explanation: This error indicates that the data in the JSON file does not match the expected format for camera poses.
• Solution: Verify that the JSON file contains valid camera pose data in the correct format.