Filter silenceremove
  Remove silence.
    Inputs:
       #0: default (audio)
    Outputs:
       #0: default (audio)
silenceremove AVOptions:
  start_periods     <int>        ..F.A.... (from 0 to 9000) (default 0)
  start_duration    <duration>   ..F.A.... set start duration of non-silence part (default 0)
  start_threshold   <double>     ..F.A.... set threshold for start silence detection (from 0 to DBL_MAX) (default 0)
  start_silence     <duration>   ..F.A.... set start duration of silence part to keep (default 0)
  start_mode        <int>        ..F.A.... set which channel will trigger trimming from start (from 0 to 1) (default any)
     any             0            ..F.A....
     all             1            ..F.A....
  stop_periods      <int>        ..F.A.... (from -9000 to 9000) (default 0)
  stop_duration     <duration>   ..F.A.... set stop duration of non-silence part (default 0)
  stop_threshold    <double>     ..F.A.... set threshold for stop silence detection (from 0 to DBL_MAX) (default 0)
  stop_silence      <duration>   ..F.A.... set stop duration of silence part to keep (default 0)
  stop_mode         <int>        ..F.A.... set which channel will trigger trimming from end (from 0 to 1) (default any)
     any             0            ..F.A....
     all             1            ..F.A....
  detection         <int>        ..F.A.... set how silence is detected (from 0 to 1) (default rms)
     peak            0            ..F.A.... use absolute values of samples
     rms             1            ..F.A.... use squared values of samples
  window            <double>     ..F.A.... set duration of window in seconds (from 0 to 10) (default 0.02)


