{ "scan", no_argument, NULL, SCAN_ONLY },
{ "main-feature",no_argument, NULL, MAIN_FEATURE },
{ "chapters", required_argument, NULL, 'c' },
{ "scan", no_argument, NULL, SCAN_ONLY },
{ "main-feature",no_argument, NULL, MAIN_FEATURE },
{ "chapters", required_argument, NULL, 'c' },