Filter vibrance
  Boost or alter saturation.
    slice threading supported
    Inputs:
       #0: default (video)
    Outputs:
       #0: default (video)
vibrance AVOptions:
  intensity         <float>      ..FV..... set the intensity value (from -2 to 2) (default 0)
  rbal              <float>      ..FV..... set the red balance value (from -10 to 10) (default 1)
  gbal              <float>      ..FV..... set the green balance value (from -10 to 10) (default 1)
  bbal              <float>      ..FV..... set the blue balance value (from -10 to 10) (default 1)
  rlum              <float>      ..FV..... set the red luma coefficient (from 0 to 1) (default 0.072186)
  glum              <float>      ..FV..... set the green luma coefficient (from 0 to 1) (default 0.715158)
  blum              <float>      ..FV..... set the blue luma coefficient (from 0 to 1) (default 0.212656)
  alternate         <boolean>    ..FV..... use alternate colors (default false)

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

