XP came out in 2005 and has, I believe, been end-of-life since 2013 and it is not surprising than companies would prefer to use current technologies over unsupported ones.įrom what I can gather from the Wikipedia DXVA page there is the suggestion that there is a fundamental difference in the way DXVA (XP) and DXVA2 (Vista and above) works. This would limit them to Windows Vista and above.
It is quite possible either that Flash or Firefox expect a DXVA2 capable display device in order to use hardware acceleration for video. I doubt this is a political decision by Google but is probably a perfect storm of obsolescence issues that have all finally just come together now. Future versions will also drop NPAPI support - which may break other things. No idea how much longer plugin support will go on for. Just because you can though, dosen't mean this will work in future or reliably, but its a decent, functional, short term workaround for an older machine.Īs of early feb 2017, firefox 52 is the last version of firefox that'll run on XP.
So, Its not a conscious choice - my guess is something isn't supported (flash?) and its a fallback resolution. These settings on about:config work - if they don't exist, set them as boolean trueĪlong with a short wait for the plugin to install. I'm running the latest build of firefox - 50.1.0, and as per the instructions here I enabled the primetime CDM - which while its supposed to be a DRM related plugin, enabled h264 and lets you view youtube videos. Amusingly enough, there's an unsupported plugin that works from adobe that works with a few about:config tweaks.
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