Filter dctdnoiz
  Denoise frames using 2D DCT.
    slice threading supported
    Inputs:
       #0: default (video)
    Outputs:
       #0: default (video)
dctdnoiz AVOptions:
  sigma             <float>      ..FV..... set noise sigma constant (from 0 to 999) (default 0)
  s                 <float>      ..FV..... set noise sigma constant (from 0 to 999) (default 0)
  overlap           <int>        ..FV..... set number of block overlapping pixels (from -1 to 15) (default -1)
  expr              <string>     ..FV..... set coefficient factor expression
  e                 <string>     ..FV..... set coefficient factor expression
  n                 <int>        ..FV..... set the block size, expressed in bits (from 3 to 4) (default 3)

This filter has support for timeline through the 'enable' option.

