Encoder gif [GIF (Graphics Interchange Format)]:
    Threading capabilities: no
    Supported pixel formats: rgb8 bgr8 rgb4_byte bgr4_byte gray pal8
GIF encoder AVOptions:
  -gifflags          <flags>      E..V.. set GIF flags
     offsetting                   E..V.. enable picture offsetting
     transdiff                    E..V.. enable transparency detection between frames

