> Date: Fri, 28 May 2010 18:40:14 +0100 > From: "Graeme Dargie" <a...@tangerine-army.co.uk> > Subject: RE: Media streaming > To: <freebsd-questions@freebsd.org> > Message-ID: > <01fb8f39bad0bd49a6d0da8f7897392904f...@mercury.galaxy.lan.lcl> > Content-Type: text/plain; > charset="iso-8859-1" > > > > -----Original Message----- > From: James Phillips [mailto:anti_spam...@yahoo.ca] > > Sent: 28 May 2010 18:23 > To: freebsd-questions@freebsd.org > Subject: RE: Media streaming > > > Date: Fri, 28 May 2010 00:14:09 +0100 > > From: "Graeme Dargie" <a...@tangerine-army.co.uk> > > Subject: RE: Media streaming > > To: <freebsd-questions@freebsd.org> > > Message-ID: > > <01fb8f39bad0bd49a6d0da8f7897392904f...@mercury.galaxy.lan.lcl> > > Content-Type: text/plain; > > charset="us-ascii"
Sorry, DRM is an alphabet soup of "Standards" and industry consortia. I was unaware of DLNA and read it as: DTLA. However, if you look at the "Overview and Vision White Paper," you will see that DTCP/IP (administered by DTLA) is required for the link layer of DLNA: http://www.dlna.org/about_us/roadmap/DLNA_Whitepaper.pdf - page 4, Table 1 The Wikipedia page lists some software that may or may not work: http://en.wikipedia.org/wiki/Digital_Living_Network_Alliance <SNIP!> > > The server does not support Digital Transmission Content > Protection: > http://www.dtcp.com/ > "Overview" presentation: > http://www.dtcp.com/documents/dtcp/DTCP_Overview.pdf > > In essence, you are supposed to encrypt the video stream > lest you copy it. > > I am a little surprised the TV would refuse to work with an > unencrypted stream, which is why I did not respond to your > first post. > > Regards, > > James Phillips > > Hi James > > I said the TV was DLNA compliant, those links at the brief > look I had appears to be the sort of encryption you would > see on a HD signal via HDMI that would prevent you say > recording HD content to your PVR device and then playing it > back to a blu-ray recorder and "recording" it to disc. I had I get the impression that DTCP is an "umbrella" DRM standard that that allows the other DRM standards to inter-operate. DTCP is administered by the Digital Transmission Licensing Administrator: a consortium of five companies including Hitachi, Intel, Panasonic, Sony, and Toshiba. HDMI uses another scheme called High-bandwidth Digital Content Protection (HDCP) for encrypting the video. http://www.digital-cp.com/ http://en.wikipedia.org/wiki/High-bandwidth_Digital_Content_Protection DTCP will likely intervene in the step where you move the video from the PVR to the Blu-ray recorder. When it comes time to record the information on the disk, a third scheme comes into play: Advanced Access Content System (AACS) http://www.aacsla.com/home http://en.wikipedia.org/wiki/Advanced_Access_Content_System The Wikipedia page appears to be more readable. > done a fair bit of googling on this before posting to the > list, it seems Sonys' implementation of DLNA is a bit > "loose" shall we say, I have seen a lot of people having > issues with DLNA complaint NAS devices not working with Sony > TV`s. As I have stated in a previous post it does work with > wmp12, but it is not elegant or the solution I want for the > reasons I stated earlier. I would expect wmp12 to work because Windows Vista and 7 implement DTCP, and Microsoft is listed as one of the sponsors of DLNA. Regards, James Phillips PS: my brain hurts reading that too :( > > Regards > > Graeme > _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
