Filter unsharp
  Sharpen or blur the input video.
    slice threading supported
    Inputs:
       #0: default (video)
    Outputs:
       #0: default (video)
unsharp AVOptions:
  luma_msize_x      <int>        ..FV..... set luma matrix horizontal size (from 3 to 23) (default 5)
  lx                <int>        ..FV..... set luma matrix horizontal size (from 3 to 23) (default 5)
  luma_msize_y      <int>        ..FV..... set luma matrix vertical size (from 3 to 23) (default 5)
  ly                <int>        ..FV..... set luma matrix vertical size (from 3 to 23) (default 5)
  luma_amount       <float>      ..FV..... set luma effect strength (from -2 to 5) (default 1)
  la                <float>      ..FV..... set luma effect strength (from -2 to 5) (default 1)
  chroma_msize_x    <int>        ..FV..... set chroma matrix horizontal size (from 3 to 23) (default 5)
  cx                <int>        ..FV..... set chroma matrix horizontal size (from 3 to 23) (default 5)
  chroma_msize_y    <int>        ..FV..... set chroma matrix vertical size (from 3 to 23) (default 5)
  cy                <int>        ..FV..... set chroma matrix vertical size (from 3 to 23) (default 5)
  chroma_amount     <float>      ..FV..... set chroma effect strength (from -2 to 5) (default 0)
  ca                <float>      ..FV..... set chroma effect strength (from -2 to 5) (default 0)
  opencl            <boolean>    ..FV..... ignored (default false)

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

