printf("usage: ffplay [options] input_file\n"
printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n" "usage: ffplay [options] input_file\n"
void show_help(void){    printf("usage: ffplay [options] input_file\n"           "Simple media player\n");    printf("\n");    show_help_options(options);    printf("\nWhile playing:\n"           "q, ESC              quit\n"           "f                   toggle full screen\n"           "p, SPC              pause\n"           "a                   cycle audio channel\n"           "v                   cycle video channel\n"           "w                   show audio waves\n"           );    exit(1);}