Filter ciescope
  Video CIE scope.
    Inputs:
       #0: default (video)
    Outputs:
       #0: default (video)
ciescope AVOptions:
  system            <int>        ..FV..... set color system (from 0 to 9) (default hdtv)
     ntsc            0            ..FV..... NTSC 1953 Y'I'O' (ITU-R BT.470 System M)
     470m            0            ..FV..... NTSC 1953 Y'I'O' (ITU-R BT.470 System M)
     ebu             1            ..FV..... EBU Y'U'V' (PAL/SECAM) (ITU-R BT.470 System B, G)
     470bg           1            ..FV..... EBU Y'U'V' (PAL/SECAM) (ITU-R BT.470 System B, G)
     smpte           2            ..FV..... SMPTE-C RGB
     240m            3            ..FV..... SMPTE-240M Y'PbPr
     apple           4            ..FV..... Apple RGB
     widergb         5            ..FV..... Adobe Wide Gamut RGB
     cie1931         6            ..FV..... CIE 1931 RGB
     hdtv            7            ..FV..... ITU.BT-709 Y'CbCr
     rec709          7            ..FV..... ITU.BT-709 Y'CbCr
     uhdtv           8            ..FV..... ITU-R.BT-2020
     rec2020         8            ..FV..... ITU-R.BT-2020
     dcip3           9            ..FV..... DCI-P3
  cie               <int>        ..FV..... set cie system (from 0 to 2) (default xyy)
     xyy             0            ..FV..... CIE 1931 xyY
     ucs             1            ..FV..... CIE 1960 UCS
     luv             2            ..FV..... CIE 1976 Luv
  gamuts            <flags>      ..FV..... set what gamuts to draw (default 0)
     ntsc                         ..FV.....
     470m                         ..FV.....
     ebu                          ..FV.....
     470bg                        ..FV.....
     smpte                        ..FV.....
     240m                         ..FV.....
     apple                        ..FV.....
     widergb                      ..FV.....
     cie1931                      ..FV.....
     hdtv                         ..FV.....
     rec709                       ..FV.....
     uhdtv                        ..FV.....
     rec2020                      ..FV.....
     dcip3                        ..FV.....
  size              <int>        ..FV..... set ciescope size (from 256 to 8192) (default 512)
  s                 <int>        ..FV..... set ciescope size (from 256 to 8192) (default 512)
  intensity         <float>      ..FV..... set ciescope intensity (from 0 to 1) (default 0.001)
  i                 <float>      ..FV..... set ciescope intensity (from 0 to 1) (default 0.001)
  contrast          <float>      ..FV..... (from 0 to 1) (default 0.75)
  corrgamma         <boolean>    ..FV..... (default true)
  showwhite         <boolean>    ..FV..... (default false)
  gamma             <double>     ..FV..... (from 0.1 to 6) (default 2.6)


