Whonix , like tails have stream isolation , however whonix is more secure, is possible to install adobe flash player and enable it and have still anonymity in whonix and tails , and that is not possible without stream isolation, that makes after all whonix and tails so special. If we want to watch videos online we can install adobe flash player -browser plugin (flashplugin-nonfree package) on whonix workstation , but in latest whonix, latest tor browser can't show the flash videos even if install adobe flash player and enable it , for example in that sites cant show the flash content : www.piippaakosinulla.fi/ and www.space.com/31747-matter-tears-through-sun-s-atmosphere-as-magnetic-filament-ruptures-video.html
.So that’s the way : iceweasel is installed by default in whonix , we go to : edit\preferences\advanced\network\settings , check manual proxy configuration , on socks host : 127.0.0.1 , on port : 9150 , we select socks v5 , and check remote DNS , these settings are the same in tor browser bundle by default, then : install https everywhere , noscript, and betterprivacy , betterprivacy need some configuration for delleting cookies automatically , i remember betterprivacy was recommended in whonix additionally for adobe flash player . If we wand to make new identity (iceweasel have not torbuton) we can go to gateway and use the restart tor, the reload firewall and the arm tor controller. Thats it ! now can watch any video anonymously , and if visit a site that show your ip online like http://ipaddress.com/ your ip is steel a tor ip because of stream isolation , another way on whonix is with vlc player , we can use the network stream * in kvm the vlc crash the guest , there is a successfully workaround in whonix documentation, and in whonix the anonymity of vlc player works (i dont know if must setup for stream isolation), mean by that , in tails probably not . vlc player can't help allways because can't show the content of a page but only a video on a page and may the site need adobe flash for show.