ComfyUI Node: Nuke Motion Blur

Nuke Motion Blur:

The NukeMotionBlur node is designed to simulate the effect of motion blur in images, a common technique used in visual effects and animation to convey movement and speed. This node applies a directional motion blur, which means it blurs the image along a specified direction, mimicking the effect of an object moving rapidly in that direction. The node is highly customizable, allowing you to control the intensity, direction, and quality of the blur effect. By adjusting parameters such as distance, angle, and samples, you can achieve a wide range of motion blur effects, from subtle to dramatic. This node is particularly useful for adding realism to animations or still images where motion is implied, enhancing the dynamic feel of the scene.

Nuke Motion Blur Input Parameters:

image

The image parameter is the input image that you want to apply the motion blur effect to. It serves as the base upon which the blur will be applied, and it is essential for the node's operation.

distance

The distance parameter controls the length of the motion blur effect. It determines how far the blur extends from the original position of the image elements. The value can range from 0.0 to 100.0, with a default of 10.0. A higher value results in a more pronounced blur effect, simulating faster motion.

angle

The angle parameter specifies the direction of the motion blur in degrees. It ranges from -180.0 to 180.0, with a default of 0.0. This parameter allows you to set the direction in which the blur is applied, enabling you to match the perceived motion direction in your scene.

samples

The samples parameter defines the number of samples used to create the blur effect. It ranges from 1 to 32, with a default of 8. More samples generally result in a smoother and more realistic blur, but they may also increase the computational load.

shutter

The shutter parameter controls the duration of the exposure for the motion blur effect, ranging from 0.0 to 1.0, with a default of 0.5. It affects how the blur is distributed along the motion path, with higher values leading to a more extended blur.

center_bias

The center_bias parameter adjusts the bias of the blur effect towards the center of the motion path. It ranges from -1.0 to 1.0, with a default of 0.0. A positive value biases the blur towards the center, while a negative value biases it away, allowing for creative control over the blur distribution.

mix

The mix parameter determines the blend between the original image and the blurred image. It ranges from 0.0 to 1.0, with a default of 1.0. A value of 1.0 results in a fully blurred image, while a value of 0.0 retains the original image without any blur.

Nuke Motion Blur Output Parameters:

IMAGE

The IMAGE output parameter is the resulting image after the motion blur effect has been applied. This output is a modified version of the input image, with the specified motion blur effect integrated, providing a visual representation of motion and speed.

Nuke Motion Blur Usage Tips:

• To achieve a realistic motion blur effect, match the angle parameter with the direction of motion in your scene.
• Use a higher samples value for smoother blur effects, especially in high-resolution images, but be mindful of the increased processing time.

Nuke Motion Blur Common Errors and Solutions:

"Distance must be greater than 0"

• Explanation: This error occurs when the distance parameter is set to 0 or a negative value, which is not valid for creating a motion blur effect.
• Solution: Ensure that the distance parameter is set to a positive value to enable the motion blur effect.

"Invalid angle value"

• Explanation: This error might occur if the angle parameter is set outside the allowed range of -180.0 to 180.0 degrees.
• Solution: Adjust the angle parameter to be within the valid range to ensure proper directionality of the blur effect.