[opendtv] Re: HDMI capture

John,

 

It clearly wasn’t just the BF, if as you say, it’s generally broadcast.  My 
best guess has to do with the CGMS-A being set to copy never.  Or, more likely, 
both bytes set to ‘111 1111’, which would yield Macrovision turned on, Copy 
Never, Broadcast Flag and Analog Source.  Either of the first two could yield a 
refusal to record reasonably.  

 

 

From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On 
Behalf Of John Willkie
Sent: Sunday, May 25, 2008 2:23 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: HDMI capture

 

No disagreement there, Jim.

NBC is in the process of upgrading all of its affiliates to new satellite 
modems.  (The existing units came from Tiernan.)  I could check with Tiernan, 
but I doubt that their legacy units permitted customizing waternarks for 
individual stations.

I also doubt that a watermark that simply enables one to say "this content was 
stolen from NBC" has much value.  On the other hand, being able to trace the 
leakage point to individual cable/satellite/IPTV/VOD customers would seem to 
have great utility.

Being able to trace the leakage to individual NBC stations would also seem to 
have negligible value, but that would require either station-specific bits 
coming out of the satellite modem, or anyway going into the transport stream 
encoder.

Come to think of it, a Chief Engineer at an NBC affiliate (and an OpenDTV 
lurker) told me in a meeting at NAB that the new units were going to be rolled 
out after the sweeps ended (which would be last Wednesday night).  I was 
thinking that the new satellite modems could account for this, but it's hard to 
imagine that they were put in service in the middle of a sweeps rating period.

I would really like to get a transport stream capture of a program segment 
where users couldn't save the content in Vista/MCE.  I'd like to get to the 
bottom of what system bits were present.  Wouldn't it be funny if this had 
nothing to do with the rc_descriptor (broadcast flag) and much to do with the 
compression layer?

John Willkie



-----Original Message----- 
From: James Albro 
Sent: May 25, 2008 11:00 AM 
To: opendtv@xxxxxxxxxxxxx 
Subject: [opendtv] Re: HDMI capture 




Watermarks can survive multiple re-encodings and could be applied at the source 
without anyone further down the chain being aware of them.

 

Jim Albro

 

----- Original Message ----- 

From: John <mailto:johnwillkie@xxxxxxxxxxxxx>  Willkie 

To: opendtv@xxxxxxxxxxxxx 

Sent: Sunday, May 25, 2008 1:56 PM

Subject: [opendtv] Re: HDMI capture

 

Richard;

In general, this is "possible."  However, the information you provided was 
either prospective, or relating to the IPTV market.  This was, simply, a 
broadcast situation.  NBC's content is encoded from 45 mb feeds at broadcast 
stations, and this is not a feature of broadcast encoders.  Yet.

John Willkie

-----Original Message----- 
From: Richard Hollandsworth 
Sent: May 25, 2008 12:17 AM 
To: opendtv@xxxxxxxxxxxxx 
Subject: [opendtv] Re: HDMI capture 

Video programs are being "watermarked" at several steps in the
distribution chain so that when a video shows up as an
unauthorized BitTorrent release, the owner of the cable box can
be traced....also if it's an inside job at headend.  For example:
http://www.drmwatch.com/article.php/3680811
http://www.contentinople.com/author.asp?section_id=431&doc_id=145886

holl_ands

==================================
ShLampen <shlampen@xxxxxxx> wrote: 

Gefen does offer a box that converts to SDI with the HDCP turned off.  However, 
you have to sign a release that says all the content you intend to run through 
the box you OWN yourself.  Not sure how they would police that!!!

 

Steve Lampen

Belden

 

---------------------------------------------------------------------- You can 
UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command 
in your user configuration settings at FreeLists.org - By sending a message to: 
opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line. 

---------------------------------------------------------------------- You can 
UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command 
in your user configuration settings at FreeLists.org - By sending a message to: 
opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.

Other related posts: