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No Full HD Playback for 32-bit Vista
snafu109 writes "Pity the Vista user with a 32-bit CPU. Senior Program Manager Steve Riley announced today at Tech.Ed Australia that full HD content shall only be played at the full resolution where only signed drivers are used — only in the 64-bit version of Vista. From the article: '"Any next-generation high definition content will not play in x32 at all," said Riley. "This is a decision that the Media Player folks made because there are just too many ways right now for unsigned kernel mode code [to compromise content protection]. The media companies asked us to do this and said they don't want any of their high definition content to play in x32 at all, because of all of the unsigned malware that runs in kernel mode can get around content protection, so we had to do this."'"
Already on the way, even the cheapo $75 CPUs have 64-bit support now.
HD definition content is and will still be playable on any Windows computer with the proper hardware and software. However, HDCP protected content will not be playable in full definition unless the proper DRM requirements are met.
Linux already plays HD content. I have proof in my living room today.
See http://mythtv.org/ and http://www.pchdtv.com/
Enjoy! I can do soooo much more with my myth box than a cable or sattelite provided pvr. I can store to DVD, I can watch from multiple networked locations, etc.
HDCP, the content-protection mechanism used for HD-DVD *and* Blu-ray, has been thoroughly cryptanalysed already by multiple groups (see http://en.wikipedia.org/wiki/HDCP#Cryptanalysis or do a google search).
c ps-shiny-red-button/
And working devices to "erase" HDCP from a video stream have already been produced and sold, e.g. this one: http://www.engadget.com/2005/07/21/the-clicker-hd
The "smart" part about HDCP is that it allows content manufacturers to revoke keys, so that new discs won't play on hardware whose key has been compromised. However, it seems fairly unlikely that manufacturers will actually do this, given that they'll break the hardware of thousands or millions of users every time a key actually gets revoked! Furthermore, as the cryptanalysis shows, it'll be fairly easy to create new working keys, so it's an ineffective defense anyway.
Conclusion: HDCP is leaky as a sieve. My bet is that it won't be long before there's a hassle-free open-source program that will simply remove it from content transparently, just as libdvdcss does for DVDs right now.
My bicyles