Filter convolution
  Apply convolution filter.
    slice threading supported
    Inputs:
       #0: default (video)
    Outputs:
       #0: default (video)
convolution AVOptions:
  0m                <string>     ..FV..... set matrix for 1st plane (default "0 0 0 0 1 0 0 0 0")
  1m                <string>     ..FV..... set matrix for 2nd plane (default "0 0 0 0 1 0 0 0 0")
  2m                <string>     ..FV..... set matrix for 3rd plane (default "0 0 0 0 1 0 0 0 0")
  3m                <string>     ..FV..... set matrix for 4th plane (default "0 0 0 0 1 0 0 0 0")
  0rdiv             <float>      ..FV..... set rdiv for 1st plane (from 0 to INT_MAX) (default 0)
  1rdiv             <float>      ..FV..... set rdiv for 2nd plane (from 0 to INT_MAX) (default 0)
  2rdiv             <float>      ..FV..... set rdiv for 3rd plane (from 0 to INT_MAX) (default 0)
  3rdiv             <float>      ..FV..... set rdiv for 4th plane (from 0 to INT_MAX) (default 0)
  0bias             <float>      ..FV..... set bias for 1st plane (from 0 to INT_MAX) (default 0)
  1bias             <float>      ..FV..... set bias for 2nd plane (from 0 to INT_MAX) (default 0)
  2bias             <float>      ..FV..... set bias for 3rd plane (from 0 to INT_MAX) (default 0)
  3bias             <float>      ..FV..... set bias for 4th plane (from 0 to INT_MAX) (default 0)
  0mode             <int>        ..FV..... set matrix mode for 1st plane (from 0 to 2) (default square)
     square          0            ..FV..... square matrix
     row             1            ..FV..... single row matrix
     column          2            ..FV..... single column matrix
  1mode             <int>        ..FV..... set matrix mode for 2nd plane (from 0 to 2) (default square)
     square          0            ..FV..... square matrix
     row             1            ..FV..... single row matrix
     column          2            ..FV..... single column matrix
  2mode             <int>        ..FV..... set matrix mode for 3rd plane (from 0 to 2) (default square)
     square          0            ..FV..... square matrix
     row             1            ..FV..... single row matrix
     column          2            ..FV..... single column matrix
  3mode             <int>        ..FV..... set matrix mode for 4th plane (from 0 to 2) (default square)
     square          0            ..FV..... square matrix
     row             1            ..FV..... single row matrix
     column          2            ..FV..... single column matrix

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

