Muxer caca [caca (color ASCII art) output device]:
    Default video codec: rawvideo.
caca_outdev AVOptions:
-window_size       <image_size> E..... set window forced size
-window_title      <string>     E..... set window title
-driver            <string>     E..... set display driver
-algorithm         <string>     E..... set dithering algorithm
-antialias         <string>     E..... set antialias method
-charset           <string>     E..... set charset used to render output
-color             <string>     E..... set color used to render output
-list_drivers      <int>        E..... list available drivers (from 0 to 1)
   true                         E.....
   false                        E.....
-list_dither       <string>     E..... list available dither options
   algorithms                   E.....
   antialiases                  E.....
   charsets                     E.....
   colors                       E.....

