DebandRemoves banding artifacts from a clip by diffusing pixels across the banded areas, while keeping the original edges intact. To use this effect, first select Show:Edges and adjust the edge threshold until the banding edges just disappear, leaving only the desired real edges. Then select Show:Result to see the result. If you still see some banding, increase Diffuse Threshold and/or Diffuse Radius.Inputs:
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Parameters:
-
Load Preset:
Push-button
.
Brings up the Preset Browser to browse all available presets for this effect.
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Save Preset:
Push-button
.
Brings up the Preset Save dialog to save a preset for this effect.
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Edge Threshold:
Default:
2,
Range:
0 to 255.
The amount by which adjacent pixels must differ to constitute a real desired edge. A value of 1.0 represents the smallest possible difference at 8 bits. This parameter should be set high enough that none of the bands appear as edges, but low enough that all the real edges are still detected.
-
Grow Edges:
Default:
0,
Range:
0 or greater.
Amount to grow the detected edges in approximate pixels. Increasing this parameter can prevent diffusion in areas that are near edges, but not on an edge.
-
Show:
Popup menu, Default: Result
.
Selects the type of output.
-
Result:
Shows the final result.
- Edges: Shows the edges of the image, where adjacent pixels differ by more than Edge Threshold. Use this mode to help fine-tune the edge detection parameters.
- Edges: Shows the edges of the image, where adjacent pixels differ by more than Edge Threshold. Use this mode to help fine-tune the edge detection parameters.
-
Result:
Shows the final result.
-
Diffuse Thresh:
Default:
1,
Range:
0 or greater.
The maximum color difference allowed when diffusing pixels. This parameter is automatically scaled by the edge threshold. Increasing it can give better results when there is a gradient within the bands. Decreasing it will reduce diffusion in areas where there are no edges.
-
Diffuse Radius:
Default:
12,
Range:
0 or greater.
The maximum radius of pixel diffusion, in approximate pixels. A larger value will remove banding more effectively in large areas with uniform colors, while a smaller value will give a better result in areas with many small color regions.
-
Pre Blur:
Default:
0,
Range:
0 or greater.
Blurs the source before diffusing pixels.
-
Post Blur:
Default:
0.5,
Range:
0 or greater.
Blurs the result after diffusing pixels. Use this parameter to reduce noisiness in the result.
Params2:
Params3:
-
Mocha:
Default:
0,
Range:
0 or greater,
Shared
.
Brings up the Mocha window for tracking footage and generating masks.
-
Blur Mocha:
Default:
0,
Range:
0 or greater,
Shared
.
Blurs the Mocha Mask by this amount before using. This can be used to soften the edges or quantization artifacts of the mask, and smooth out the time displacements.
-
Mocha Opacity:
Default:
1,
Range:
0 to 1,
Shared
.
Controls the strength of the Mocha mask. Lower values reduce the intensity of the effect.
-
Invert Mocha:
Check-box, Default:
off,
Shared
.
If enabled, the black and white of the Mocha Mask are inverted before applying the effect.
-
Show Mocha Only:
Check-box, Default:
off,
Shared
.
Bypass the effect and show the Mocha Mask itself.
-
Bypass Mocha:
Check-box, Default:
off,
Shared
.
Ignore the Mocha Mask and apply the effect to the entire source clip.
