Encoder png [PNG (Portable Network Graphics) image]:
    Threading capabilities: frame
    Supported pixel formats: rgb24 rgba rgb48be rgba64be pal8 gray gray8a gray16be monob
PNG encoder AVOptions:
  -dpi               <int>        E..V.. Set image resolution (in dots per inch) (from 0 to 65536)
  -dpm               <int>        E..V.. Set image resolution (in dots per meter) (from 0 to 65536)

