Force movie height to <height> (default: autodetect)
-v, --verbose <level>
Set verbose level (0=quiet, 1=default, 2=debug)
+-q, --quiet
+ Omit normal log messages, only log errors
-C, --cgi
For use as CGI- prepend http header, write to stdout
-V, --version
Print version information and exit
+-s, --scale <percent>
+ Scale image to <percent>% size.