--no-progress do not print progress bar
--console-title display progress in console titlebar
-v, --verbose print various debugging information
- --dump-intermediate-pages print downloaded pages to debug problems (very verbose)
+ --dump-pages print downloaded pages to debug problems (very verbose)
--write-pages Write downloaded intermediary pages to files in the current directory to debug problems
--print-traffic Display sent and read HTTP traffic
-C, --call-home Contact the youtube-dl server for debugging.