Firefox not playing videos

Generally I save videos to watch them but some sites insist on watching videos in a webpage. For some reason my firefox can't play them. It says its missing a plugin. When I click to download it it says it can't find one. So what plugin am I missing? It wont play any media in a window I don't think. I am using media player classic and real alternatives for quicktime and real.

Browser Statistics Month by Month
2006     IE7     IE6     IE5     Ffox     Moz     N     O
March     0.6%     58.8%     5.3%     24.5%     2.4%     0.5%     1.5%

Opera is better than Firefox the way Macs are better than PCs: really not, but the userbase are fanatics.

So it's because Opera is new, and haven't gotten any attention yet. (NOT! Started in 1994, still has a fucking small userbase! Firefox built up a 25% share in about two/three years. So a tenth of the time, but 10 times the userbase (because it sux lol!))

So WHY aren't people using Opera, when it's so much better? Because users are lazy by default! The only ones who actually manage to put alternative software to public use are Open Source Zealots, and with Opera being closed source: TRASH CAN!

So to you Opera promoters. Just sit there, look smug and stfu will you? I'll happily continue using FF for now.