Encoder jpegls [JPEG-LS]:
    General capabilities: threads intraonly 
    Threading capabilities: frame
    Supported pixel formats: bgr24 rgb24 gray gray16le
jpegls AVOptions:
  -pred              <int>        E..V..... Prediction method (from 0 to 2) (default left)
     left            0            E..V.....
     plane           1            E..V.....
     median          2            E..V.....


