Filter oscilloscope
  2D Video Oscilloscope.
    Inputs:
       #0: default (video)
    Outputs:
       #0: default (video)
oscilloscope AVOptions:
  x                 <float>      ..FV..... set scope x position (from 0 to 1) (default 0.5)
  y                 <float>      ..FV..... set scope y position (from 0 to 1) (default 0.5)
  s                 <float>      ..FV..... set scope size (from 0 to 1) (default 0.8)
  t                 <float>      ..FV..... set scope tilt (from 0 to 1) (default 0.5)
  o                 <float>      ..FV..... set trace opacity (from 0 to 1) (default 0.8)
  tx                <float>      ..FV..... set trace x position (from 0 to 1) (default 0.5)
  ty                <float>      ..FV..... set trace y position (from 0 to 1) (default 0.9)
  tw                <float>      ..FV..... set trace width (from 0.1 to 1) (default 0.8)
  th                <float>      ..FV..... set trace height (from 0.1 to 1) (default 0.3)
  c                 <int>        ..FV..... set components to trace (from 0 to 15) (default 7)
  g                 <boolean>    ..FV..... draw trace grid (default true)
  st                <boolean>    ..FV..... draw statistics (default true)
  sc                <boolean>    ..FV..... draw scope (default true)

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

