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Home: Flint
Blending Front and Back Clips
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Creating and Refining a Key
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Removing Unwanted Greys
Removing Grain
Graininess
can make it difficult to pull a clean and effective key. Use the
Degrain tools in the Master Keyer to remove grain from clips.
The same Degrain tools are also available in
the Keyer's Setup menu. If you set the Degrain parameters in the
Master Keyer, they affect only the Master Keyer. If you set the
Degrain parameters in the Keyer's Setup menu, they affect all the
Keyer's ranges, including the Master Keyer. See
Blurring Grainy Clips.
NoteDegrain parameters are animatable. Degrain
samples are also animatable and appear in the Channel Editor as
the Degrain_Matrix channel, located in the Key_Degrain folder. See
Creating Animations.
To
remove grain:
- In
the Master Keyer menu, select Degrain from the Sampling box (or
press 4).
- Set
the view to Result view.
- Sample
a grainy area of the image. To sample a single pixel, click the
image. To sample an area of the image, Ctrl-drag
a selection box.
The Degrain button is enabled and the algorithm
is applied to the image—grain is removed from the image.
NoteThe Degrain button is either enabled or
disabled for the entire clip—you cannot turn it on and
off for different frames in the clip.
- Drag
in the Degrain fields to modify the grain size and restore edge
sharpness.
Drag: |
To: |
Size |
Estimate the size of the grain in the image. |
Edges |
De-sharpen the edge of the image. By default, Degrain
sharpens the edges. Use the Edges field to restore the natural look
of the edges in the image.
|
- If
you are not satisfied with the result, you can start over with a new
sample, and then adjust the Degrain fields. To resample an area
of the image, Ctrl+Alt-drag
the image.
The sample is outlined in green, indicating
that you are resampling the image.
NoteYou can also reset Degrain parameters. To
reset Degrain parameters, click the Reset button, next to the sampling box.
- If
resampling the image and adjusting the Degrain fields does not sufficiently
remove grain, enable More to increase the overall effect of Degrain.
NoteThe More button is either enabled or disabled
for the entire clip—you cannot turn it on and off for different
frames in the clip. When you enable More, processing speed slows down.