Muxer gif [CompuServe Graphics Interchange Format (GIF)]:
    Common extensions: gif.
    Mime type: image/gif.
    Default video codec: gif.
GIF muxer AVOptions:
  -loop              <int>        E........ Number of times to loop the output: -1 - no loop, 0 - infinite loop (from -1 to 65535) (default 0)
  -final_delay       <int>        E........ Force delay (in centiseconds) after the last frame (from -1 to 65535) (default -1)


