Denoise frames using 3D FFT (frequency domain filtering).

The filter accepts the following options:

sigma

Set the noise sigma constant. This sets denoising strength. Default value is 1. Allowed range is from 0 to 30. Using very high sigma with low overlap may give blocking artifacts.

amount

Set amount of denoising. By default all detected noise is reduced. Default value is 1. Allowed range is from 0 to 1.

block

Set size of block, Default is 4, can be 3, 4, 5 or 6. Actual size of block in pixels is 2 to power of block, so by default block size in pixels is 2^4 which is 16.

overlap

Set block overlap. Default is 0.5. Allowed range is from 0.2 to 0.8.

prev

Set number of previous frames to use for denoising. By default is set to 0.

next

Set number of next frames to to use for denoising. By default is set to 0.

planes

Set planes which will be filtered, by default are all available filtered except alpha.