Frame Difference
Subtract the current frame of a video from the previous frames.
Frame Difference
Method #
This node takes the incoming frame and subtracts it against the previous image, highlighting the areas where the frame has changed. Useful for detecting changes in a video, or for highlighting areas of motion in a scene.
Parameters
These properties control the core behaviours of the node.
Parameter Details
Active Enables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance.
Blend Amount Changes the opacity of the new effect over the original image.
Blend Mode (RGB) Change how the generated effect blends with the parent image RGB.
Intensity Scale The intensity of the effect that is applied.
Num Frames Number of frames other than the original frame included in the difference calculation.
Use Absolute Difference Toggles whether magnitudes of differences between pixels should be used, or whether differences only occur when the new pixel is brighter than the old.
Inputs
These properties control the core behaviours of the node.
| Parameter | Details |
|---|---|
| Active | Enables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance. |
| Blend Amount | Changes the opacity of the new effect over the original image. |
| Blend Mode (RGB) | Change how the generated effect blends with the parent image RGB. |
| Intensity Scale | The intensity of the effect that is applied. |
| Num Frames | Number of frames other than the original frame included in the difference calculation. |
| Use Absolute Difference | Toggles whether magnitudes of differences between pixels should be used, or whether differences only occur when the new pixel is brighter than the old. |
| Name | Description | Typical Input |
|---|---|---|
| Active | Enables or disables the effect. Disabling the effect means it will no longer compute, so disabling a node when not in use can improve performance. | Envelope Modifier |