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Corrections for Alex Grundner on AACS - Chris Lanier's Blog

Corrections for Alex Grundner on AACS

The Media Center Show Delves into DRM (Highly Recommended) | Alexander Grundner has more incorrect assumptions on AACS and other content protection systems.

 

Quote: “…most of us think interoperability means taking DRM protected content and being able to play it on variety of third party devices.”

 

Thus cheap licensing comes in, Windows Media Rights Management is a great example.  Just about anyone can license WMRM (for very cheap) and add the ability for their device (eg. third party) to play the content.  Not the “best” for interoperability as Alex is thinking, but much closer then other technologies.

 

Quote: “So, if you take his "theoretically" and add Microsoft's commitment to usage terms dictated by content companies, consumers may not have "flow" at all, but a bottleneck. Why? Because content companies will set the terms of how the media is used”

 

Incorrect.  The AACS LA defines this sort of thing and it’s not specific to Microsoft products in any way.  Anyone is free to create devices that enable the content to “flow”, doesn’t matter if it runs on Windows, Linux, Mac, etc.  It must, however, meet the bar that the AACS LA has set or that company will be held liable to AACS.  That means they could have their AACS license revoked and other damages may be due.

 

Quote: “Sure, managed copies as function is enabled, but that doesn't guarantee consumer will be able to make a backup recording or even be able to stream the video to extenders if the distributor doesn't allow it – the ball is truly in their court.”

 

Partially correct, partially incorrect.  For HD DVD, the ability to make a single managed copy will be guaranteed to the consumer.  How it “flows” once again, is defined by the AACS LA and not the content owner/distributor.  Blu-ray has yet to publicly announce a policy on managed copies (mainly where BD+/ROM Mark play into it).

 

Quote: “And lastly, a little more on "flow." If content distributors will be setting the terms on how users can play their content (remember via usage terms and contract law), then we will never have the ability to take high-quality versions of audio or video and transcode them into different formats for use on our other devices (i.e. portable video players, cellphones, handhelds, etc.) like we do today. That doesn't sound like flow to me.”

 

Incorrect.  There is no reason you can’t.  The device must support the protection method (AACS, WMRM) in question, other than that with something like AACS there is no reason you can’t have it “flow” like this.

Published Fri, Nov 11 2005 13:45 by chrisl

Comments

# re: Corrections for Alex Grundner on AACS

Quote: “Sure, managed copies as function is enabled, but that doesn't guarantee consumer will be able to make a backup recording or even be able to stream the video to extenders if the distributor doesn't allow it – the ball is truly in their court.”


I do tend to side with the quote here. While you express that this is possible with HD DVD, it is lost that the market is not filled with HD DVD! I own 450 DVD movies and none of them are HD DVD. Yes through applications I can copy them to a sever and play them on the Media Center, but not the Extender, unless I go through a lengthy reencode process.
So my question is, what is being done to facilitate the thousands of users who have a existing DVD collection they would like to have made available on media centers as well as Extenders? After all this is truely "Media Everywhere".
And one last thing. I may have missed it, but has it actually been said that we will be able to back up a HD DVD and then stream it to other Media Centers as well as extenders in our home?

Friday, November 11, 2005 3:36 PM by chrisl

# re: Corrections for Alex Grundner on AACS

You can stream this blog or Microsoft Presspass and find that Managed Copies will be a feature of every HD DVD sold. WMRM will likely (no public information released, sorry) allow streaming from that point. You can take a look at the AACS website for more information and specific information will be released in a few months.

Windows Media Rights Management for Network Devices will enable (legally) streaming current DVD's (CSS, not AACS) through the home to other devices.

Friday, November 11, 2005 4:57 PM by chrisl

# re: Corrections for Alex Grundner on AACS

There is still no information on how managed copy will really work. There have been many rumors that a managed copy will block to your from skipping or fast forwarding content just like the current content locks that modern DVD players are respecting... oh and it means you have back up the studies crap segments and adds along with the actual content. If true this will devalue the whole thing tremendously and will all still end up ripping are movies to some more usable and less cumbersome standard. The IP holders to date have not exactly shown themselves visionaries on this type of issue and tend to do the wrong things to try and force unwarranted and annoying control *coughSonycough*.

To Gregs point, dose MS really believe any one is going to re-encode hundreds of movies into the so so MS format just so they can work on exstender... rather then go on the war path that is. It's just plain cooperate blindness that is going to cause a huge unnecessary fiasco and a ton of negative xbox 360 publicity just because they want to force a standard nobody cares about instead of ponying up a for MPEG4/divx/xvid compliance. Ridiculous.

Saturday, November 12, 2005 12:51 PM by chrisl

# re: Corrections for Alex Grundner on AACS

I havn't heard of any restrictions, other than needed an Internet connection.

Transcoding will be a seemless in the next 4-6 months. The user will not even know that the content is being transcoding! It doesn't need to be transcoding to any Microsoft formats, it can be MPEG-2 or MPEG-4. In the case of Extenders, MPEG-2 and WMV9 are supported and both of which are also DLNA compliant! Using WMV9 will be smarter to allow for better network transportion.

Saturday, November 12, 2005 1:49 PM by chrisl

# Assumptions on non-public information = incorrect?

Like you said in the opening: "Alexander Grundner has more incorrect assumptions on AACS and other content protection systems." When all details become public, then there will be no reason to make assumptions -- even Marcus Matthias, Project Manager at Microsoft, was hesitant to disclose too much about AACS (and other technologies) at this point. So, stating that I'm incorrect is a mute point when all the facts haven't been made publicly available. Can you point us all to the URLs where we can confirm your claims?

Sunday, November 13, 2005 2:26 AM by chrisl

# Rebuttal posted on eHomeUpgrade

I posted a rebuttal to your "corrections." You can read it here: http://www.ehomeupgrade.com/entry/1634/rebuttal_to_chris

Sunday, November 13, 2005 4:07 AM by chrisl

# re: Corrections for Alex Grundner on AACS

Rebuttal to Alexander Grundner's "Incorrect Corrections" on AACS
http://msmvps.com/chrisl/archive/2005/11/13/75319.aspx

Sunday, November 13, 2005 12:54 PM by chrisl