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Longhorn to Require Monitor-Based DRM

Mr_Silver writes "Engadget has an interesting article regarding a new feature in Longhorn entitled PVP-OPM (Protected Video Path - Output Protection Management) which detects the capabilities of the display devices you are using and manages how (and if at all) content is sent to it. In short, this means that if Longhorn detects that your monitor is not "secure" enough, then your premium video content won't play on it until you buy one that is. Who gets to decide? The content providers of course." From the article: "So what will happen when you try to play premium content on your incompatible monitor? If you're "lucky", the content will go through a resolution constrictor. The purpose of this constrictor is to down-sample high-resolution content to below a certain number of pixels. The newly down-sampled content is then blown back up to match the resolution of your monitor. This is much like when you shrink a JPEG and then zoom into it. Much of the clarity is lost. The result is a picture far fuzzier than it need be."

23 of 1,266 comments (clear)

  1. Digging their own grave... by Hexydes · · Score: 2, Informative
    The more Microsoft makes "solutions" that cater to the computer industry, at the expense of limiting end-users' choices and flexibility, the closer they are to losing the base that provides their income.

    Bad news for Microsoft, good news for other operating systems.

  2. RTA: It's not just Microsoft by Call+Me+Black+Cloud · · Score: 4, Informative

    From the article:
    To be fair - it's not just Microsoft. The next generation of digital content will, by and large, be protected to the display. Recently Toshiba released their HD-DVD specifications and have dictated HDMI/HDCP as a display requirement for playing back high-definition content. Most expect Blu-ray to have similar restrictions.
    You don't think Apple is going to do this too? What will happen with Linux though? With Linux making inroads into set top boxes there will be some solution for Linux, though I don't think it will make its way to the desktop (legally).
  3. Re:TV-out by tepples · · Score: 2, Informative

    Living room SDTV or EDTV monitors can display 720x480 (in NTSC or PAL60 territories) or 720x576 (in PAL50 or SECAM territories) tops, and the constrictor is said to kick in only at resolutions of 720 lines or higher. Most newer HDTV monitors have HDCP, which allows for digital restrictions management.

    But still, ye cannae stop the analog hole.

  4. Re:GNUstep by TheRaven64 · · Score: 2, Informative

    GNUstep is a development platform, not a desktop environment. There are some quite nice desktop environment projects based on GNUstep though, and the Nesedah Cameleon theme created for Étoilé looks very nice (and has been subject to very strict usability review).

    --
    I am TheRaven on Soylent News
  5. Re:Will it stop a semi-serious pirate? by archeopterix · · Score: 2, Informative
    I doubt they have monitors or video cards that can detect, say, a simple splitter or repeater. It's the sort of thing a third-year EE student can build (fourth year for digital signals).
    A simple splitter or repeater won't get you anywhere if the signal is encrypted, as I guess it's supposed to be, at least the signal transmitted via the monitor cable. You have to stick your probes where the signal is not encrypted, and the real question is: how hard can they make it and at what cost per unit?

    Video encryption in real time is doable, but how will they protect the LCD matrix? I'm genuinely curious.

  6. not just video by _randy_64 · · Score: 2, Informative

    Be sure to read that second link in the summary as well. Looks like they have the same thing planned for audio too! DRM'd speakers, anyone?

    --
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  7. Eh? Monitor based? by Momoru · · Score: 4, Informative

    Wouldn't this just be done at video card or motherboard level or more likely software level? I'm assuming it will still have a standard output to any generic monitor, the average person wouldn't upgrade to a new monitor for a new OS.

    Actually from the microsoft white paper:
    >PVP-UAB provides the last internal link in the Longhorn content protection chain, to ensure that the premium video content reliably makes it from the Longhorn Protected Environment to being rendered on the card without a copy of the content being stolen.

    So it's not a monitor thing, and the article writer appears to be a dumbass.

    1. Re:Eh? Monitor based? by awkScooby · · Score: 2, Informative
      No, PVP-UAB is the last software piece, and as such it ensures that you are using a DRM compliant Video Card and monitor. If you have DVI, but your monitor doesn't support HDCP, then you're stuck with low-res output if the content provider marks their content as such.

      FTFA:

      To work with PVP-OPM, a graphics card manufacturer must provide for the following:

      • Output Protection Management capability on all board outputs--at a minimum, provide the ability to turn off every output.
      • Device driver capability to report reliably about the board outputs and their settings.
      • HDCP protection for DVI and HDMI outputs and Macrovision and CGMS-A protection on analog TV-out outputs. Otherwise, outputs will be turned off by the PVP-OPM software.
      • The ability to pass video through a constrictor--that is, a downscaler followed by an upscaler--so that the information content of premium video can be reduced when an unprotected output such as analog VGA is present.

      If your Monitor isn't HDCP compliant, video will be downscaled, or disabled. The article writer appears to be right on the money.

  8. Re:Audio DRM by Mr_Silver · · Score: 2, Informative
    How long until we see something similar with audio? "Users without an appropriately DRM-equipped soundcard will hear down-sampled audio played back through the Windows PC Speaker driver"

    From this page, Protected User Mode Audio (PUMA) will do exactly that as it (and I quote) "provides a safer environment for audio playback, as well as checking that the enabled outputs are consistent with what the content allows".

    In addition, Protected Audio Path (PAP) is "a future initiative under investigation for how to provide encryption of audio over user accessible buses." which sounds equally ominous.

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  9. Re:WTF? by Amoeba · · Score: 5, Informative
    So, let me get this straight. If I so chose to upgrade to Longhorn, I'd have to buy a whole new videocard and monitor to actually view the OS and any other programs tailor written for it?

    Actually, no. Only if you want to use the Secure Computing platform built in to Longhorn. This "feature" is part of Microsoft's Next-Generation Secure Computing Base. Essentially they are putting into place a framework that will provide a secure channel from keyboard to OS to monitor that runs in a protected bubble from the non-secure OS/apps/hardware. Longhorn will use a protected kernel "shell" in which DRM-enabled applications can run without interference (or being touched by) applications or non-DRM-enabled hardware running in the non-secure OS portion.

    The videocard tech they are talking about here is ostensibly to prevent things like screen-scraping or intercepting video output. The goal is to provide a secure portion of OS that is inviolate from bootup and has secured pathways for data to travel. Think of it as Uber-root or a chroot'd OS partition that include hardware.

    Using this secure channel is optional. You are not forced to use it. You can run all the aps you want, you can run it on your old hardware. However, the NGSCB is there should you need... and provided you have the hardware that supports it.

    Now, certainly this feature has the *IIA's drooling. The theory is sound but the actual use and implementation can be (and probably will be) abused.

    --
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  10. Re:bees knees? by leenoble_uk · · Score: 2, Informative

    Bees Knees

    British (English) slang. Derived from the word Business.

    Something may be described as "The Business" pronounced "Biz-Niss" hence "Bees Knees" or "The Dog's Bollocks" or "The Mutt's Nuts" all pretty much mean something is good.

    Alright bloke.

  11. Re:Outstanding by Talez · · Score: 1, Informative

    Hi. 1998 called. They want their DRM paranoia back.

    Windows Media Player already prevents DRMed content from being output to a digital source.

  12. Re:Not likely by wankledot · · Score: 5, Informative
    Lets clear a few things up:

    Apple did not create AAC. (Dolby Labs did) AAC does not have DRM. (Apple's DRM only applies to content from their store, not all AAC files.) Apple could easily apply its DRM to pretty much any codec.

    Saying that AAC is related to content protection at all is just pure unmitigated bullshit. I'm starting to think you don't know what you're talking about.

    Apple has not licensed its DRM to anyone, and there is no DRM in the system itself except for its own products (specifically the iTunes Music Store.) I think the chances of the Monitors pref pane ever having a "security" tab are nil. Go sell your FUD elsewhere.

    --
    My sig is blank, I typed this by hand.
  13. A fix from our friends in Germany by Digital_Quartz · · Score: 5, Informative

    http://www.spatz-tech.de/spatz/dvi_magic.htm

    Magic de-HDCPed DVI. Completely illegal in the USA thanks to the DMCA, but the rest of the world can enjoy our content at full resolution.

  14. Re:Outstanding by man_of_mr_e · · Score: 2, Informative

    But will it look like shit? Or will it look "good enough", like a standard TV?

    Most people can't tell the difference between HD and ED, and many can't tell the difference between HD and SD. Most people aren't videophiles. If it looks "good enough" to them, why should they care?

  15. Re:Cost/benefit by SocialEngineer · · Score: 2, Informative

    To an extent - however, all the music released under RIAA affiliated labels that I am interested I purchase used - for a much cheaper price. The CDs are usually good quality, and I rip it to my computer anyway (as do most of my friends - very rarely do they play straight from their original CDs). I can get 5 CDs of my favorite music for about 30 bucks at stores like Slackers.

    I will agree that it does take more effort, but the trade off is well worth it, in my opinion.

    I guess I will concede regarding my point on societal apathy regarding the subject of DRM hardware. However, I still see it as a problem getting people educated on the subject. Maybe I just lack faith in society :)

    --
    "Better to be vulgar than non-existent" -Bev Henson
  16. Re:Outstanding by Fishstick · · Score: 2, Informative

    >Linux UI sucks. And the main reason is because it is kinda based around windows

    didn't know there was a "Linux UI". Are you referring to KDE? There are alternative window systems, Linux is not tied to one specific user interface.

    --

    There is much cruelty in the universe, John.
    Yeah, we seem to have the tour map.

  17. Re:extreme case of DRM by Anubis350 · · Score: 2, Informative

    I believe GP was refering to vLc...

    --
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  18. Even /. readers don't follow that logic. by jbn-o · · Score: 2, Informative

    No they won't. Not even the /. readers go out of their way to avoid proprietary implementations of things that don't need to be there. Lots of them use proprietary software (Microsoft Windows and MacOS X, most notably) and patent-encumbered formats (such as MP3, as you mentioned) instead of technically superior Ogg Vorbis which is not encumbered and is available to everyone freely. Most DVD viewers I know have no idea what region coding is, much less how to disable or alter region coding on their DVD players.

    It's a matter of convincing users that some nifty feature comes with the system and taking on these restrictions (if they're mentioned at all) are the only way to get those features.

    This is the path by which users are being lured away from pursuing their software freedom and if it works on the most technically-adept /. readers, there's no reason to believe it won't work on less adept mass audiences.

  19. Re:Whats the point? by glesga_kiss · · Score: 2, Informative
    Actually, I know people that use iTunes that strip out the DRM from their music files.

    I'd guess either because your friends also have geekish tendancies, or because you have explained to them, right? Joe Sixpack doesn't know any better, and only has an iPod as they were the thing to own a few months back.

    the popularity of the service cannot be viewed as an acceptance of DRM (since it can be removed).

    I disagree, at a guess I'd say the vast majority of the iTunes files out there belong to non-tech-literate people, who don't even realise you can get round the encyption. Computers are black-box to them, the believe what they are told. "These files are protected to ensure your rights" sounds good, and they leave it at that.

    The popularity of the service is only a view on how god-damm good Apples marketing dept is. :-)

  20. Re:Outstanding by squeee · · Score: 2, Informative
    That's nice. Why don't people just buy new monitors for $200-$300 that have the capability of displaying the content?

    Why the hell should I buy a new monitor? My current one works perfectly. I have the hardware now but someone else is going to effectively break it for me. There is no plus side. there is only a down side, that's why we're discussing it.

  21. Re:extreme case of DRM by Mechcozmo · · Score: 3, Informative
    Just use AppleScript to get around it. Something along the lines of:

    tell application Quicktime
    fullscreen
    end tell

    Should do it. Or use VLC if you want. The latest version (might still be a beta) works great under Tiger.

  22. It's already cracked by RonGHolmes · · Score: 2, Informative

    Also from engadget: http://www.engadget.com/entry/1234000230050640

    A bit expensive of course, but proves the theory. I think Steve Jobs even said on stage (maybe at D a couple of years ago) that DRM is only a stop gap. If people want to get stuff uncracked it can happen. Everything is crackable. Unless you start working on quantum algorithms you're not going to create something a computer can't deduce with enough time. Not to mention, the layering of software and hardware - (example, the TCP/IP stack sits on top of the networking stack. The window manager stack sits on top of the display stack etc.) you're always going to be able to override some library somewhere.