Filter freezeframes
  Freeze video frames.
    Inputs:
       #0: source (video)
       #1: replace (video)
    Outputs:
       #0: default (video)
freezeframes AVOptions:
  first             <int64>      ..FV...... set first frame to freeze (from 0 to I64_MAX) (default 0)
  last              <int64>      ..FV...... set last frame to freeze (from 0 to I64_MAX) (default 0)
  replace           <int64>      ..FV...... set frame to replace (from 0 to I64_MAX) (default 0)


