Trisquel doesn't include Adobe Flash or any proprietary pieces which are
needed for most commercial video sites. Some exceptions do exist, but are not
necessarily sources for major motion pictures, TV shows, and the like. For
example YouTube will work great with Trisquel particularly if you install the
MPV plug-in (it appears all flash-only and HTML5 videos work then), but it's
not necessarily a good source for major hollywood films or TV shows:
https://addons.mozilla.org/en-us/firefox/addon/watch-with-mpv/
The plug-in also works with close to 1000 sites both major and insignificant:
https://rg3.github.io/youtube-dl/supportedsites.html
If it isn't supported yet (BBC news videos for instance) it probably will be-
and if it isn't there is also another plug-in you can use called User Agent
Switcher:
http://chrispederick.com/work/user-agent-switcher/
What this will do is 'trick' a site into showing you content in HTML5 instead
of Adobe Flash. Most sites that support Android/Apple devices also support
HTML5 as Adobe Flash isn't supported by Android nor Apple devices. The reason
these sites don't work already without Adobe Flash on Trisquel is more a
matter of poor site design. So the only way to force them to show you the
content in a format that is compatible with your computer is to trick them
into thinking your on an Android/iDevice.
You can do this with the User Agent Switcher. To do this is pretty simple,
just install the plug-in and then go to Tools > Default User Agent > Edit
User Agent and click the New button > New User Agent. In the user agent field
past the following:
Mozilla/5.0 (Linux; U; Android 3.0.1; en-us; GT-P7100 Build/HRI83)
AppleWebkit/534.13 (KHTML, like Gecko) Version/4.0 Safari/534.13
And for the App code name:
Mozilla
You can enter Android 3 for the description and delete whatever is in the
other fields (other than the ones above of course)...
As long as your not using sites that depend on a DRM (digital restrictions
management) component it'll probably work. This works for news web sites,
etc. It won't work for sites like Netflix or Amazon Prime as these sites
distribute 'premium' commercial content that the entertainment industry is
fiercely protective off. Humorously all this content is available DRM-free
elsewhere, but of course the majority of people don't care it's infringing
these companies copyrights. They'd be better off just streaming unencrypted
as the way it is now they're just pushing people to sites that don't respect
the industries copyrights.
If the sites your using have lots of advertisement I'd also suggest Adblock
Plus:
https://adblockplus.org/
Normally I'd not bother installing this, but a lot of the good sources for
entertainment include advertisements that make them unbearable without this
plug-in.