Every time again when I install a Linux distribution (usually Ubuntu in my case) I have a hard time finding the packages which are required to get H.264 and MP3 support working in Firefox, aka enabling gstreamer. I can't find anything useful on MDN, not even a Google Search reveals much useful, as usually I end up with one required package missing which takes me a long Trial and Error approach to find (especially for H.264). What I hope to find on MDN is a simple apt-get install [list_of_packages] so that everything works; and would be nice to find the equivalent commands for other distributions as well.

Ideally this is something './mach bootstrap' would do for you, but in the meantime docs should suffice.

gstreamer is going in bug 1234092