Чтобы не тратить попусту ресурсы вашего провайдера и роутера, Можно "заблокировать" выход в YouTube на уровне вашего роутера. Ниже приведен рабочий список адресов серверов в виде скрипта для Mikrotik.   Просто скопируйте и вставьте его в терминал Микротика и у вас появится отдельный Address List "YTB" который можно "заблокировать".

Но будьте внимательны, сервисы YouTube тесно переплетены непосредственно с Google, возможно в данном списке затронутся какие то сервисы от Google.

/ip firewall address-list
add address=youtube.com list=YTB
add address=youtube.ru list=YTB
add address=www.youtube.com list=YTB
add address=www.youtube.ru list=YTB
add address=youtube.pl list=YTB
add address=www.youtube.pl list=YTB
add address=mx.youtube.com list=YTB
add address=admin.youtube.com list=YTB
add address=devel.youtube.com list=YTB
add address=stats.youtube.com list=YTB
add address=http.youtube.com list=YTB
add address=mx0.youtube.com list=YTB
add address=administration.youtube.com list=YTB
add address=development.youtube.com list=YTB
add address=svn.youtube.com list=YTB
add address=id.youtube.com list=YTB
add address=mx1.youtube.com list=YTB
add address=ads.youtube.com list=YTB
add address=devsql.youtube.com list=YTB
add address=syslog.youtube.com list=YTB
add address=images.youtube.com list=YTB
add address=adserver.youtube.com list=YTB
add address=mysql.youtube.com list=YTB
add address=devtest.youtube.com list=YTB
add address=info.youtube.com list=YTB
add address=news.youtube.com list=YTB
add address=alerts.youtube.com list=YTB
add address=dhcp.youtube.com list=YTB
add address=test1.youtube.com list=YTB
add address=internal.youtube.com list=YTB
add address=noc.youtube.com list=YTB
add address=alpha.youtube.com list=YTB
add address=test2.youtube.com list=YTB
add address=direct.youtube.com list=YTB
add address=internet.youtube.com list=YTB
add address=ns.youtube.com list=YTB
add address=ap.youtube.com list=YTB
add address=dmz.youtube.com list=YTB
add address=testing.youtube.com list=YTB
add address=intra.youtube.com list=YTB
add address=ns0.youtube.com list=YTB
add address=apache.youtube.com list=YTB
add address=dns.youtube.com list=YTB
add address=upload.youtube.com list=YTB
add address=intranet.youtube.com list=YTB
add address=ns1.youtube.com list=YTB
add address=app.youtube.com list=YTB
add address=dns0.youtube.com list=YTB
add address=vm.youtube.com list=YTB
add address=ipv6.youtube.com list=YTB
add address=ns2.youtube.com list=YTB
add address=apps.youtube.com list=YTB
add address=dns1.youtube.com list=YTB
add address=vnc.youtube.com list=YTB
add address=lab.youtube.com list=YTB
add address=ns3.youtube.com list=YTB
add address=appserver.youtube.com list=YTB
add address=dns2.youtube.com list=YTB
add address=ldap.youtube.com list=YTB
add address=aptest.youtube.com list=YTB
add address=download.youtube.com list=YTB
add address=vpn.youtube.com list=YTB
add address=linux.youtube.com list=YTB
add address=ops.youtube.com list=YTB
add address=auth.youtube.com list=YTB
add address=en.youtube.com list=YTB
add address=web.youtube.com list=YTB
add address=local.youtube.com list=YTB
add address=oracle.youtube.com list=YTB
add address=backup.youtube.com list=YTB
add address=erp.youtube.com list=YTB
add address=web2test.youtube.com list=YTB
add address=log.youtube.com list=YTB
add address=owa.youtube.com list=YTB
add address=beta.youtube.com list=YTB
add address=eshop.youtube.com list=YTB
add address=whois.youtube.com list=YTB
add address=pbx.youtube.com list=YTB
add address=blog.youtube.com list=YTB
add address=exchange.youtube.com list=YTB
add address=wiki.youtube.com list=YTB
add address=s3.youtube.com list=YTB
add address=f5.youtube.com list=YTB
add address=secure.youtube.com list=YTB
add address=chat.youtube.com list=YTB
add address=fileserver.youtube.com list=YTB
add address=www2.youtube.com list=YTB
add address=server.youtube.com list=YTB
add address=citrix.youtube.com list=YTB
add address=firewall.youtube.com list=YTB
add address=xml.youtube.com list=YTB
add address=main.youtube.com list=YTB
add address=shop.youtube.com list=YTB
add address=cms.youtube.com list=YTB
add address=forum.youtube.com list=YTB
add address=manage.youtube.com list=YTB
add address=sip.youtube.com list=YTB
add address=corp.youtube.com list=YTB
add address=mgmt.youtube.com list=YTB
add address=crs.youtube.com list=YTB
add address=mirror.youtube.com list=YTB
add address=sql.youtube.com list=YTB
add address=cvs.youtube.com list=YTB
add address=git.youtube.com list=YTB
add address=mobile.youtube.com list=YTB
add address=squid.youtube.com list=YTB
add address=database.youtube.com list=YTB
add address=gw.youtube.com list=YTB
add address=help.youtube.com list=YTB
add address=monitor.youtube.com list=YTB
add address=ssh.youtube.com list=YTB
add address=db.youtube.com list=YTB
add address=mssql.youtube.com list=YTB
add address=ssl.youtube.com list=YTB
add address=demo.youtube.com list=YTB
add address=helpdesk.youtube.com list=YTB
add address=mta.youtube.com list=YTB
add address=dev.youtube.com list=YTB
add address=home.youtube.com list=YTB
add address=216.239.40.0/22 list=YTB
add address=216.239.38.0/23 list=YTB
add address=216.239.36.0/24 list=YTB
add address=216.239.32.0/19 list=YTB
add address=216.58.192.0/19 list=YTB
add address=209.85.128.0/17 list=YTB
add address=208.117.224.0/19 list=YTB
add address=208.81.188.0/22 list=YTB
add address=208.68.108.0/22 list=YTB
add address=208.65.152.0/22 list=YTB
add address=207.223.160.0/20 list=YTB
add address=199.223.232.0/21 list=YTB
add address=199.192.112.0/22 list=YTB
add address=199.36.156.0/24 list=YTB
add address=199.36.154.0/23 list=YTB
add address=193.186.4.0/24 list=YTB
add address=192.178.0.0/15 list=YTB
add address=192.158.28.0/22 list=YTB
add address=173.255.112.0/20 list=YTB
add address=173.194.0.0/16 list=YTB
add address=172.253.0.0/16 list=YTB
add address=172.217.0.0/16 list=YTB
add address=108.59.80.0/20 list=YTB
add address=104.237.160.0/19 list=YTB
add address=104.156.64.0/18 list=YTB
add address=104.134.0.0/15 list=YTB
add address=104.133.0.0/23 list=YTB
add address=104.132.0.0/23 list=YTB
add address=74.125.0.0/16 list=YTB
add address=74.114.24.0/21 list=YTB
add address=72.14.192.0/18 list=YTB
add address=70.32.128.0/19 list=YTB
add address=66.249.64.0/19 list=YTB
add address=66.102.0.0/20 list=YTB
add address=64.233.160.0/19 list=YTB
add address=64.18.0.0/20 list=YTB
add address=35.208.0.0/12 list=YTB
add address=35.200.0.0/13 list=YTB
add address=35.199.128.0/18 list=YTB
add address=35.199.0.0/17 list=YTB
add address=35.198.0.0/16 list=YTB
add address=35.196.0.0/15 list=YTB
add address=35.192.0.0/14 list=YTB
add address=35.184.0.0/13 list=YTB
add address=34.0.0.0/10 list=YTB
add address=23.251.128.0/19 list=YTB
add address=23.236.48.0/20 list=YTB
add address=8.35.192.0/20 list=YTB
add address=8.34.208.0/20 list=YTB
add address=8.8.4.0/24 list=YTB
add address=74.125.205.0/24 list=YTB
add address=142.251.1.0/24 list=YTB
add address=64.233.161.0/24 list=YTB
add address=64.233.163.0/24 list=YTB
add address=108.177.14.0/24 list=YTB
add address=142.250.150.0/24 list=YTB
add address=173.194.221.0/24 list=YTB
add address=142.250.186.0/24 list=YTB
add address=142.250.74.0/24 list=YTB
add address=142.250.181.0/24 list=YTB
add address=172.217.16.0/24 list=YTB
add address=142.250.184.0/24 list=YTB
add address=142.250.185.0/24 list=YTB
add address=216.58.206.0/24 list=YTB
add address=216.58.212.0/24 list=YTB
add address=74.125.160.0/24 list=YTB
add address=74.125.162.0/24 list=YTB
add address=173.194.1.0/24 list=YTB
add address=188.43.61.0/24 list=YTB
add address=74.125.104.0/24 list=YTB
add address=74.125.153.0/24 list=YTB
add address=74.125.108.0/24 list=YTB
add address=173.194.10.0/24 list=YTB
add address=157.240.252.0/24 list=YTB
add address=157.240.253.0/24 list=YTB
add address=87.245.216.0/24 list=YTB
add address=172.217.133.0/24 list=YTB
add address=173.194.220.0/24 list=YTB
add address=173.194.6.0/24 list=YTB
add address=74.125.163.0/24 list=YTB
add address=74.125.8.0/24 list=YTB
add address=74.125.13.0/24 list=YTB
add address=74.125.11.0/24 list=YTB
add address=64.233.164.0/24 list=YTB
add address=195.95.178.0/24 list=YTB
add address=173.194.19.0/24 list=YTB
add address=173.194.18.0/24 list=YTB
add address=64.233.184.198 list=YTB
add address=74.125.71.198 list=YTB
add address=173.194.217.0/24 list=YTB
add address=128.0.0.0/24 list=YTB
add address=209.85.226.0/24 list=YTB
add address=209.85.165.0/24 list=YTB
add address=173.194.24.0/24 list=YTB
add address=173.194.140.0/24 list=YTB
add address=172.217.131.0/24 list=YTB
add address=173.194.7.0/24 list=YTB
add address=173.194.53.0/24 list=YTB
add address=173.194.141.0/24 list=YTB
add address=173.194.57.0/24 list=YTB
add address=74.125.155.0/24 list=YTB
add address=173.194.191.0/24 list=YTB
add address=173.194.56.0/24 list=YTB
add address=173.194.143.0/24 list=YTB