Modify the hosts, add the following rules on the end of the hosts
# Youtube Upload 203.208.46.181 youtube.com 203.208.46.181 www.youtube.com 203.208.46.181 gdata.youtube.com 203.208.46.181 m.youtube.com 203.208.46.181 help.youtube.com 203.208.46.181 upload.youtube.com 203.208.46.181 accounts.youtube.com 203.208.46.181 insight.youtube.com 203.208.46.181 apiblog.youtube.com 203.208.46.181 clients1.youtube.com 203.208.46.181 s.youtube.com 203.208.46.181 s2.youtube.com 203.208.46.181 i.ytimg.com 203.208.46.181 i1.ytimg.com 203.208.46.181 i2.ytimg.com 203.208.46.181 i3.ytimg.com 203.208.46.181 i4.ytimg.com 203.208.46.181 s.ytimg.com 203.208.46.181 ytimg.l.google.com