Decoder exr [OpenEXR image]:
    General capabilities: dr1 threads 
    Threading capabilities: frame and slice
EXR AVOptions:
  -layer             <string>     .D.V.... Set the decoding layer (default "")
  -gamma             <float>      .D.V.... Set the float gamma value when decoding (from 0.001 to FLT_MAX) (default 1)
  -apply_trc         <int>        .D.V.... color transfer characteristics to apply to EXR linear input (from 1 to 18) (default gamma)
     bt709                        .D.V.... BT.709
     gamma                        .D.V.... gamma
     gamma22                      .D.V.... BT.470 M
     gamma28                      .D.V.... BT.470 BG
     smpte170m                    .D.V.... SMPTE 170 M
     smpte240m                    .D.V.... SMPTE 240 M
     linear                       .D.V.... Linear
     log                          .D.V.... Log
     log_sqrt                     .D.V.... Log square root
     iec61966_2_4                 .D.V.... IEC 61966-2-4
     bt1361                       .D.V.... BT.1361
     iec61966_2_1                 .D.V.... IEC 61966-2-1
     bt2020_10bit                 .D.V.... BT.2020 - 10 bit
     bt2020_12bit                 .D.V.... BT.2020 - 12 bit
     smpte2084                    .D.V.... SMPTE ST 2084
     smpte428_1                   .D.V.... SMPTE ST 428-1


