F_DeGrain’s spatial filtering involves averaging pixels within
the same frame. This can lead to the blurring of the image
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As a general guideline, if you have just a single frame to work
on we would recommend using F_DeGrain to achieve the best
results.
However, if you are looking to remove noise or grain
from a sequence of images, better results are likely to obtained
by using the Furnace plug-in F_DeNoise, which is a fully motioncompensated
noise reducer.
F_DeGrain works as a filter