Filter sab
  Apply shape adaptive blur.
    Inputs:
       #0: default (video)
    Outputs:
       #0: default (video)
sab AVOptions:
  luma_radius       <float>      ..FV..... set luma radius (from 0.1 to 4) (default 1)
  lr                <float>      ..FV..... set luma radius (from 0.1 to 4) (default 1)
  luma_pre_filter_radius <float>      ..FV..... set luma pre-filter radius (from 0.1 to 2) (default 1)
  lpfr              <float>      ..FV..... set luma pre-filter radius (from 0.1 to 2) (default 1)
  luma_strength     <float>      ..FV..... set luma strength (from 0.1 to 100) (default 1)
  ls                <float>      ..FV..... set luma strength (from 0.1 to 100) (default 1)
  chroma_radius     <float>      ..FV..... set chroma radius (from -0.9 to 4) (default -0.9)
  cr                <float>      ..FV..... set chroma radius (from -0.9 to 4) (default -0.9)
  chroma_pre_filter_radius <float>      ..FV..... set chroma pre-filter radius (from -0.9 to 2) (default -0.9)
  cpfr              <float>      ..FV..... set chroma pre-filter radius (from -0.9 to 2) (default -0.9)
  chroma_strength   <float>      ..FV..... set chroma strength (from -0.9 to 100) (default -0.9)
  cs                <float>      ..FV..... set chroma strength (from -0.9 to 100) (default -0.9)

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

