HDCP issues
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Stephen Marquard
Nov 13, 2013, 10:22:01 AM11/13/13
to matterho...@opencast.org
Hi all,
We are testing a configuration for new lecture theatres where we have:
Kramer VS−44HN 4x4 HDMI Matrix Switcher > Kramer VP-424 HDMI-HDMI Scaler > Blackmagic Decklink Mini-Recorder HDMI capture
card
This is a dual-projector configuration, so two outputs from the 4x4 switcher would go to data projectors and the other 2 to the scalers and then Blackmagic cards.
We have run into difficulties with the output from a Macbook Air which appears to be similar to that described here:
to quote:
---
"Since the display connected to the Mac mini is non-HDCP compliant, the Mac cannot legally display that
HD content. When you connect the Mac mini to a display that is HDCP compliant, the Mac mini recognizes
and encrypts the output 100% of the time, even when HD content is not being played. This could be done
for many reasons but mostly because it would prevent the output from glitching when you play a movie and
HDCP is initiated. Since Apple assumes your computer is connected directly to the display, it doesn't hurt to
encrypt all content, because the user has no knowledge of this happening.
This can create a problem when the Mac mini is added into a commercial installation, because we never go
from source directly to a display. Going into devices that are HDCP compliant and then going out to devices
that are non-compliant will expose this issue. An example of this issue can be illustrated by connecting a Mac
mini into the HDMI input of the VP-729. Since the VP-729 is HDCP compliant, the Mac mini automatically
encrypts its output. HDMI input of Kramer's VP-729 switcher scaler is now HDCP encrypted, the 15-Pin
analog output of the scaler will shut off even if you aren’t watching any HDCP material on the computer. The
same would apply if the digital output of the scaler was connected to a non-compliant display. The tricky thing
here is that the user could connect the Mac mini directly to that non-compliant display and get a picture
since the Mac will recognize this display as non-compliant. Another interesting example concerns connecting
a Mac mini to a Kramer DA or Matrix switcher. The Mac mini will make an HDCP connection with the input
of that device; therefore, making it impossible to go to a non-compliant display.
This is a very odd problem to have, but there can be a solution as long as the application does not call for the
Mac mini to be playing HDCP videos. If the first device the Mac mini recognizes is a non-HDCP device, then it
will think it is connected to a non-compliant display and it won’t encrypt its output. This can be accomplished
by placing a VA-1DVIN in-between the computer and the scaler, matrix switcher, or distribution amplifier.
The VA-1DVIN is usually used as an EDID Emulation device, but since it is not HDCP compliant it can also
be used to emulate a non-HDCP environment allowing the computer to output a non-HDCP signal. While
this issue can be exposed using Kramer equipment, it is not a Kramer problem and is just a matter of
understanding how the Mac mini operates."
HD content. When you connect the Mac mini to a display that is HDCP compliant, the Mac mini recognizes
and encrypts the output 100% of the time, even when HD content is not being played. This could be done
for many reasons but mostly because it would prevent the output from glitching when you play a movie and
HDCP is initiated. Since Apple assumes your computer is connected directly to the display, it doesn't hurt to
encrypt all content, because the user has no knowledge of this happening.
This can create a problem when the Mac mini is added into a commercial installation, because we never go
from source directly to a display. Going into devices that are HDCP compliant and then going out to devices
that are non-compliant will expose this issue. An example of this issue can be illustrated by connecting a Mac
mini into the HDMI input of the VP-729. Since the VP-729 is HDCP compliant, the Mac mini automatically
encrypts its output. HDMI input of Kramer's VP-729 switcher scaler is now HDCP encrypted, the 15-Pin
analog output of the scaler will shut off even if you aren’t watching any HDCP material on the computer. The
same would apply if the digital output of the scaler was connected to a non-compliant display. The tricky thing
here is that the user could connect the Mac mini directly to that non-compliant display and get a picture
since the Mac will recognize this display as non-compliant. Another interesting example concerns connecting
a Mac mini to a Kramer DA or Matrix switcher. The Mac mini will make an HDCP connection with the input
of that device; therefore, making it impossible to go to a non-compliant display.
This is a very odd problem to have, but there can be a solution as long as the application does not call for the
Mac mini to be playing HDCP videos. If the first device the Mac mini recognizes is a non-HDCP device, then it
will think it is connected to a non-compliant display and it won’t encrypt its output. This can be accomplished
by placing a VA-1DVIN in-between the computer and the scaler, matrix switcher, or distribution amplifier.
The VA-1DVIN is usually used as an EDID Emulation device, but since it is not HDCP compliant it can also
be used to emulate a non-HDCP environment allowing the computer to output a non-HDCP signal. While
this issue can be exposed using Kramer equipment, it is not a Kramer problem and is just a matter of
understanding how the Mac mini operates."
---
While we are still to test this solution, it seems it would prevent users in the venue from playing HDCP-protected content (even if one was happy to not have it recorded).
Has anyone else run into similar issues, and if so how are you dealing with them?
Regards
Stephen
UNIVERSITY OF CAPE TOWN
This e-mail is subject to the UCT ICT policies and e-mail disclaimer published on our website at http://www.uct.ac.za/about/policies/emaildisclaimer/ or obtainable from +27 21 650 9111. This e-mail is intended only for the person(s) to whom it is addressed. If the e-mail has reached you in error, please notify the author. If you are not the intended recipient of the e-mail you may not use, disclose, copy, redirect or print the content. If this e-mail is not related to the business of UCT it is sent by the sender in the sender's individual capacity.
Stuart Phillipson
Nov 13, 2013, 11:02:17 AM11/13/13
to <matterhorn-users@opencast.org>
We have seen similar problems with Mac Minis in our test environment, but we've never seen anyone take a Mac Mini to the teaching environment. Even in our most Modern teaching environments VGA is still supported and most commonly people are still using
VGA even on HDMI devices.
In the field there are Blu-Ray players, but I don't have one answer for you about the outcomes as it varies a bit depending on the exact AV setup and model of switcher. In most environments if the Blu-Ray player fires up the scaler will Blank the image,
which will return after the HDCP signal has been removed.
In some of our teaching locations I have found that 3rd part AV installers have added HDCP strippers to get round some of these problem. All I can really say on this is that they work and you'd need to check if they are legal to use / procure in your locality.
Best Regards
Stuart
Phillipson | Media
Technologies Coordinator
IT Services
Room 1.023 Devonshire House
University of Manchester
Manchester
M13 9PL
United Kingdom
e-mail: stuart.p...@manchester.ac.uk
Phone: 016130 60478
IT Services
Room 1.023 Devonshire House
University of Manchester
Manchester
M13 9PL
United Kingdom
e-mail: stuart.p...@manchester.ac.uk
Phone: 016130 60478
This e-mail is subject to the UCT ICT policies and e-mail disclaimer published on our website athttp://www.uct.ac.za/about/policies/emaildisclaimer/ or obtainable from +27 21 650 9111. This e-mail is intended only for the person(s) to whom it is addressed. If the e-mail has reached you in error, please notify the author. If you are not the intended recipient of the e-mail you may not use, disclose, copy, redirect or print the content. If this e-mail is not related to the business of UCT it is sent by the sender in the sender's individual capacity.--
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Stephen Marquard
Nov 13, 2013, 11:05:04 AM11/13/13
to matterho...@opencast.org
In our test setup, the problem shows up with a Macbook Air, so seems to affect a range of Apple products. I found this Kramer white paper which gives a good description (Apple issues start on p.6):
Cheers
Stephen
From: Stuart Phillipson [Stuart.P...@manchester.ac.uk]
Sent: 13 November 2013 06:02 PM
To: <matterho...@opencast.org>
Subject: Re: [Matterhorn-Users] HDCP issues
Sent: 13 November 2013 06:02 PM
To: <matterho...@opencast.org>
Subject: Re: [Matterhorn-Users] HDCP issues
Paul Pettit
Nov 13, 2013, 11:18:12 AM11/13/13
to matterho...@opencast.org
hi stephen,
HDCP is a nightmare :(
we have our video matrices set up to send the HDCP signal out to a
http://www.hdfury.com device and then back into the matrix to be
distributed to displays/capture that doesn't support HDCP (older smart
podium displays are not HDCP friendly either), while sending the
unstripped signal straight to the projector. works well for us with
various apple kit as well as blu-ray and dvd players that for some
reason often output HDCP even for device menus and non-protected content.
we have trouble with some apple stuff using VGA adapters too, so being
able to use DVI/HDMI seems to make it more reliable (as you as you strip
the HDCP...).
shout if you want more info on our setups.
thanks,
paul.
On 13/11/13 16:05, Stephen Marquard wrote:
> In our test setup, the problem shows up with a Macbook Air, so seems to
> affect a range of Apple products. I found this Kramer white paper which
> gives a good description (Apple issues start on p.6):
>
> http://www.kramerelectronics.com/downloads/white-papers/hdmi_challenges_whitepaper_3.pdf
>
>
> Cheers
> Stephen
>
> ------------------------------------------------------------------------
> *From:* Stuart Phillipson [Stuart.P...@manchester.ac.uk]
> *Sent:* 13 November 2013 06:02 PM
> *To:* <matterho...@opencast.org>
> *Subject:* Re: [Matterhorn-Users] HDCP issues
> Phone: 016130 *60478*
>> ------------------------------------------------------------------------
>> <mailto:matterhorn-use...@opencast.org>.
>> To post to this group, send email tomatterh...@opencast.org
>> <mailto:matterho...@opencast.org>.
>> Visit this group
>> athttp://groups.google.com/a/opencast.org/group/matterhorn-users/.
Multimedia Development
University of Sussex
+44 (0) 1273 87 3223
HDCP is a nightmare :(
we have our video matrices set up to send the HDCP signal out to a
http://www.hdfury.com device and then back into the matrix to be
distributed to displays/capture that doesn't support HDCP (older smart
podium displays are not HDCP friendly either), while sending the
unstripped signal straight to the projector. works well for us with
various apple kit as well as blu-ray and dvd players that for some
reason often output HDCP even for device menus and non-protected content.
we have trouble with some apple stuff using VGA adapters too, so being
able to use DVI/HDMI seems to make it more reliable (as you as you strip
the HDCP...).
shout if you want more info on our setups.
thanks,
paul.
On 13/11/13 16:05, Stephen Marquard wrote:
> In our test setup, the problem shows up with a Macbook Air, so seems to
> affect a range of Apple products. I found this Kramer white paper which
> gives a good description (Apple issues start on p.6):
>
> http://www.kramerelectronics.com/downloads/white-papers/hdmi_challenges_whitepaper_3.pdf
>
>
> Cheers
> Stephen
>
> *From:* Stuart Phillipson [Stuart.P...@manchester.ac.uk]
> *Sent:* 13 November 2013 06:02 PM
> *To:* <matterho...@opencast.org>
> *Subject:* Re: [Matterhorn-Users] HDCP issues
>
> We have seen similar problems with Mac Minis in our test environment,
> but we've never seen anyone take a Mac Mini to the teaching environment.
> Even in our most Modern teaching environments VGA is still supported and
> most commonly people are still using VGA even on HDMI devices.
>
> In the field there are Blu-Ray players, but I don't have one answer for
> you about the outcomes as it varies a bit depending on the exact AV
> setup and model of switcher. In most environments if the Blu-Ray player
> fires up the scaler will Blank the image, which will return after the
> HDCP signal has been removed.
>
> In some of our teaching locations I have found that 3rd part AV
> installers have added HDCP strippers to get round some of these problem.
> All I can really say on this is that they work and you'd need to check
> if they are legal to use / procure in your locality.
>
> Best Regards
>
>
> Stuart Phillipson |* Media TechnologiesCoordinator*
> We have seen similar problems with Mac Minis in our test environment,
> but we've never seen anyone take a Mac Mini to the teaching environment.
> Even in our most Modern teaching environments VGA is still supported and
> most commonly people are still using VGA even on HDMI devices.
>
> In the field there are Blu-Ray players, but I don't have one answer for
> you about the outcomes as it varies a bit depending on the exact AV
> setup and model of switcher. In most environments if the Blu-Ray player
> fires up the scaler will Blank the image, which will return after the
> HDCP signal has been removed.
>
> In some of our teaching locations I have found that 3rd part AV
> installers have added HDCP strippers to get round some of these problem.
> All I can really say on this is that they work and you'd need to check
> if they are legal to use / procure in your locality.
>
> Best Regards
>
>
>
> IT Services
> Room 1.023 Devonshire House
> University of Manchester
> Manchester
> M13 9PL
> United Kingdom
>
> e-mail: stuart.p...@manchester.ac.uk
> <mailto:stuart.p...@manchester.ac.uk>
> IT Services
> Room 1.023 Devonshire House
> University of Manchester
> Manchester
> M13 9PL
> United Kingdom
>
> e-mail: stuart.p...@manchester.ac.uk
> Phone: 016130 *60478*
>> UNIVERSITY OF CAPE TOWN
>>
>> This e-mail is subject to the UCT ICT policies and e-mail disclaimer
>> published on our website
>> athttp://www.uct.ac.za/about/policies/emaildisclaimer/or obtainable
>>
>> This e-mail is subject to the UCT ICT policies and e-mail disclaimer
>> published on our website
>> from +27 21 650 9111. This e-mail is intended only for the person(s)
>> to whom it is addressed. If the e-mail has reached you in error,
>> please notify the author. If you are not the intended recipient of the
>> e-mail you may not use, disclose, copy, redirect or print the content.
>> If this e-mail is not related to the business of UCT it is sent by the
>> sender in the sender's individual capacity.
>>
>>
>>
>> --
>> You received this message because you are subscribed to the Google
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>> please notify the author. If you are not the intended recipient of the
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>> If this e-mail is not related to the business of UCT it is sent by the
>> sender in the sender's individual capacity.
>>
>>
>>
>> --
>> You received this message because you are subscribed to the Google
>> Groups "Matterhorn Users" group.
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>
> --
> You received this message because you are subscribed to the Google
> Groups "Matterhorn Users" group.
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>
> --
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--
Paul Pettit
> --
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>
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--
Multimedia Development
University of Sussex
+44 (0) 1273 87 3223
Stuart Phillipson
Nov 13, 2013, 11:21:50 AM11/13/13
to <matterhorn-users@opencast.org>
Paul, with the hdfury are you converting to VGA or using one of the digital models? If so I'd be interested to know which one and how well it's worked for you.
Best Regards
Stuart
Phillipson | Media
Technologies Coordinator
IT Services
Room 1.023 Devonshire House
University of Manchester
Manchester
M13 9PL
United Kingdom
e-mail: stuart.p...@manchester.ac.uk
Phone: 016130 60478
Kramer VS-44HN 4x4 HDMI Matrix Switcher > Kramer VP-424 HDMI-HDMI
Paul Pettit
Nov 13, 2013, 11:38:30 AM11/13/13
to matterho...@opencast.org
hi stuart,
On 13/11/13 16:21, Stuart Phillipson wrote:
> Paul, with the hdfury are you converting to VGA or using one of the
> digital models? If so I'd be interested to know which one and how well
> it's worked for you.
we have some hdfury3 and some older hdfury2 devices which are both VGA.
we then use the shortest VGA cable possible (just a few cms) into a
cheapo VGA to DVI converter and feed that back into the matrix. quality
is fine (and the projected image still uses the unstripped version
anyway), and stability is rock solid (had this in place for a few years
now).
unfortunately the last couple of theatres were done by a contractor
instead of us, and they refused to include the hdfury so we don't have
full recording capability in our 2 newest and shiniest theatres :(
though at least the new smart podiums have HDCP support so you can see
what you are projecting.
thanks,
paul.
> Best Regards
>
> Stuart Phillipson |* Media TechnologiesCoordinator*
>
> IT Services
> Room 1.023 Devonshire House
> University of Manchester
> Manchester
> M13 9PL
> United Kingdom
>
> e-mail: stuart.p...@manchester.ac.uk
> <mailto:stuart.p...@manchester.ac.uk>
> Phone: 016130 *60478*
>
>>> <mailto:matterho...@opencast.org>>
>>>> an emailtomatterhorn...@opencast.org
>>>> <mailto:tomatterhorn-us...@opencast.org>
>>>> <mailto:matterhorn-use...@opencast.org>.
>>>> To post to this group, send emailtomatt...@opencast.org
>>>> <mailto:tomatterh...@opencast.org>
>>> <mailto:matterho...@opencast.org>.
>>> To post to this group, send email to matterho...@opencast.org
>>> <mailto:matterho...@opencast.org>.
>> To post to this group, send email to matterho...@opencast.org
>> <mailto:matterho...@opencast.org>.
On 13/11/13 16:21, Stuart Phillipson wrote:
> Paul, with the hdfury are you converting to VGA or using one of the
> digital models? If so I'd be interested to know which one and how well
> it's worked for you.
we then use the shortest VGA cable possible (just a few cms) into a
cheapo VGA to DVI converter and feed that back into the matrix. quality
is fine (and the projected image still uses the unstripped version
anyway), and stability is rock solid (had this in place for a few years
now).
unfortunately the last couple of theatres were done by a contractor
instead of us, and they refused to include the hdfury so we don't have
full recording capability in our 2 newest and shiniest theatres :(
though at least the new smart podiums have HDCP support so you can see
what you are projecting.
thanks,
paul.
> Best Regards
>
> Stuart Phillipson |* Media TechnologiesCoordinator*
>
> IT Services
> Room 1.023 Devonshire House
> University of Manchester
> Manchester
> M13 9PL
> United Kingdom
>
> e-mail: stuart.p...@manchester.ac.uk
> <mailto:stuart.p...@manchester.ac.uk>
> Phone: 016130 *60478*
>
> On 13 Nov 2013, at 16:18, Paul Pettit <p.t.p...@SUSSEX.AC.UK
> <mailto:p.t.p...@SUSSEX.AC.UK>> wrote:
>
>> hi stephen,
>>
>> HDCP is a nightmare :(
>>
>> we have our video matrices set up to send the HDCP signal out to
>> ahttp://www.hdfury.com <http://www.hdfury.com/>device and then back
>
>> hi stephen,
>>
>> HDCP is a nightmare :(
>>
>> we have our video matrices set up to send the HDCP signal out to
>> into the matrix to be distributed to displays/capture that doesn't
>> support HDCP (older smart podium displays are not HDCP friendly
>> either), while sending the unstripped signal straight to the
>> projector. works well for us with various apple kit as well as blu-ray
>> and dvd players that for some reason often output HDCP even for device
>> menus and non-protected content.
>>
>> we have trouble with some apple stuff using VGA adapters too, so being
>> able to use DVI/HDMI seems to make it more reliable (as you as you
>> strip the HDCP...).
>>
>> shout if you want more info on our setups.
>>
>> thanks,
>>
>> paul.
>>
>> On 13/11/13 16:05, Stephen Marquard wrote:
>>> In our test setup, the problem shows up with a Macbook Air, so seems to
>>> affect a range of Apple products. I found this Kramer white paper which
>>> gives a good description (Apple issues start on p.6):
>>>
>>> http://www.kramerelectronics.com/downloads/white-papers/hdmi_challenges_whitepaper_3.pdf
>>>
>>>
>>> Cheers
>>> Stephen
>>>
>>> ------------------------------------------------------------------------
>>> *From:* Stuart Phillipson [Stuart.P...@manchester.ac.uk
>>> <mailto:Stuart.P...@manchester.ac.uk>]
>> support HDCP (older smart podium displays are not HDCP friendly
>> either), while sending the unstripped signal straight to the
>> projector. works well for us with various apple kit as well as blu-ray
>> and dvd players that for some reason often output HDCP even for device
>> menus and non-protected content.
>>
>> we have trouble with some apple stuff using VGA adapters too, so being
>> able to use DVI/HDMI seems to make it more reliable (as you as you
>> strip the HDCP...).
>>
>> shout if you want more info on our setups.
>>
>> thanks,
>>
>> paul.
>>
>> On 13/11/13 16:05, Stephen Marquard wrote:
>>> In our test setup, the problem shows up with a Macbook Air, so seems to
>>> affect a range of Apple products. I found this Kramer white paper which
>>> gives a good description (Apple issues start on p.6):
>>>
>>> http://www.kramerelectronics.com/downloads/white-papers/hdmi_challenges_whitepaper_3.pdf
>>>
>>>
>>> Cheers
>>> Stephen
>>>
>>> ------------------------------------------------------------------------
>>> *From:* Stuart Phillipson [Stuart.P...@manchester.ac.uk
>>> <mailto:matterho...@opencast.org>>
>>>> <mailto:tomatterhorn-us...@opencast.org>
>>>> <mailto:matterhorn-use...@opencast.org>.
>>>> To post to this group, send emailtomatt...@opencast.org
>>>> <mailto:tomatterh...@opencast.org>
>>>> <mailto:matterho...@opencast.org>.
>>>> Visit this group
>>>> athttp://groups.google.com/a/opencast.org/group/matterhorn-users/.
>>>
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "Matterhorn Users" group.
>>> To unsubscribe from this group and stop receiving emails from it, send
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>>> To post to this group, send email to matterho...@opencast.org
>>>> Visit this group
>>>> athttp://groups.google.com/a/opencast.org/group/matterhorn-users/.
>>>
>>> --
>>> You received this message because you are subscribed to the Google
>>> Groups "Matterhorn Users" group.
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>>> <mailto:matterho...@opencast.org>.
>>> Visit this group at
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>>>
>>> --
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>>>
>>> --
>>> You received this message because you are subscribed to the Google
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>>> Visit this group at
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>>
>>
>> --
>> Paul Pettit
>> Multimedia Development
>> University of Sussex
>> +44 (0) 1273 87 3223
>>
>> --
>> You received this message because you are subscribed to the Google
>> Groups "Matterhorn Users" group.
>> To unsubscribe from this group and stop receiving emails from it, send
>> an email to matterhorn-use...@opencast.org
>> <mailto:matterhorn-use...@opencast.org>.
>>> http://groups.google.com/a/opencast.org/group/matterhorn-users/.
>>
>>
>> --
>> Paul Pettit
>> Multimedia Development
>> University of Sussex
>> +44 (0) 1273 87 3223
>>
>> --
>> You received this message because you are subscribed to the Google
>> Groups "Matterhorn Users" group.
>> To unsubscribe from this group and stop receiving emails from it, send
>> an email to matterhorn-use...@opencast.org
>> To post to this group, send email to matterho...@opencast.org
>> <mailto:matterho...@opencast.org>.
Paul Pettit
Nov 13, 2013, 11:43:02 AM11/13/13
to matterho...@opencast.org
On 13/11/13 16:38, Paul Pettit wrote:
> hi stuart,
>
> On 13/11/13 16:21, Stuart Phillipson wrote:
>> Paul, with the hdfury are you converting to VGA or using one of the
>> digital models? If so I'd be interested to know which one and how well
>> it's worked for you.
>
> we have some hdfury3 and some older hdfury2 devices which are both VGA.
> we then use the shortest VGA cable possible (just a few cms) into a
> cheapo VGA to DVI converter and feed that back into the matrix. quality
> is fine (and the projected image still uses the unstripped version
> anyway), and stability is rock solid (had this in place for a few years
> now).
>
> unfortunately the last couple of theatres were done by a contractor
> instead of us, and they refused to include the hdfury so we don't have
> full recording capability in our 2 newest and shiniest theatres :(
> though at least the new smart podiums have HDCP support so you can see
> what you are projecting.
one other thing i should have said is that everything is scaled to 1080p
> hi stuart,
>
> On 13/11/13 16:21, Stuart Phillipson wrote:
>> Paul, with the hdfury are you converting to VGA or using one of the
>> digital models? If so I'd be interested to know which one and how well
>> it's worked for you.
>
> we have some hdfury3 and some older hdfury2 devices which are both VGA.
> we then use the shortest VGA cable possible (just a few cms) into a
> cheapo VGA to DVI converter and feed that back into the matrix. quality
> is fine (and the projected image still uses the unstripped version
> anyway), and stability is rock solid (had this in place for a few years
> now).
>
> unfortunately the last couple of theatres were done by a contractor
> instead of us, and they refused to include the hdfury so we don't have
> full recording capability in our 2 newest and shiniest theatres :(
> though at least the new smart podiums have HDCP support so you can see
> what you are projecting.
before being fed to the hdfury, so it has a constant 1080p signal with
no disconnections or resolution changes (source switching is faded
through black etc.)
Hank Magnuski
Nov 13, 2013, 11:44:20 AM11/13/13
to Matterhorn Users
Paul Pettit
Nov 13, 2013, 11:54:09 AM11/13/13
to matterho...@opencast.org
On 13/11/13 16:44, Hank Magnuski wrote:
> The HDFury is becoming a banned device. Their website is down. eBay is
> banning sale.
the website is working fine here.
> The HDFury is becoming a banned device. Their website is down. eBay is
> banning sale.
we are not using it to break the law and record protected content, just
so that people with apple kit get their own keynote presentations
recorded. i'm sure if you wanted a copy of a hollywood blu-ray there are
much easier and higher quality ways to obtain it than using a lecture
capture system in a university theatre ;)
> You can probably find them on the Silk Road or other nefarious places.
thanks,
paul.
Hank Magnuski
Nov 13, 2013, 12:03:51 PM11/13/13
to Matterhorn Users
I don't know if the EU has different laws than the US which is totally under control of the HDCP cartel.
NCast has a similar issue. We cannot legally accept HDMI encrypted content on any of our HDMI inputs. Customers ask us "Why is the video black?". Well, it wasn't our idea.--
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Stuart Phillipson
Nov 13, 2013, 12:15:16 PM11/13/13
to <matterhorn-users@opencast.org>
I believe in the US under the DMCA it's illegal to sell equipment (or make equipment) that's capable of circumventing copy protection systems. So in the EU we're all good for now.
Stuart
Phillipson | Media
Technologies Coordinator
IT Services
Room 1.023 Devonshire House
University of Manchester
Manchester
M13 9PL
United Kingdom
e-mail: stuart.p...@manchester.ac.uk
Phone: 016130 60478
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Stuart Phillipson
Nov 13, 2013, 1:53:25 PM11/13/13
to <matterhorn-users@opencast.org>
Btw, just to add to the HDCP woes, during testing I found that even with HDCP compliant equipment if the Mac enters a hibernate state and then tries to resume the HDCP connection it often fails the handshake. So if you have a laptop with a short hibernate setting
and a long lecture you’ll often find that to the user the projector simply appears to stop working. Disconnecting the HDMI lead and reconnecting it solves the problem but not all users will pick up this idea.
Stuart Phillipson | Media Technologies Coordinator
Room 1.023 Devonshire House
University of Manchester
Manchester
M13 9PL
United Kingdom
e-mail: stuart.p...@manchester.ac.uk
Phone: 016130 60478
University of Manchester
Manchester
M13 9PL
United Kingdom
e-mail: stuart.p...@manchester.ac.uk
Phone: 016130 60478
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