19 May
2014
19 May
'14
1:28 p.m.
Not sure if it has been referred this proposition from 2012, that
looks kind of dead.
http://movielabs.com/tdl/
I have no real interest in KDMs, maybe when TKR is widely deployed I
will consider them a real option.
But, such a worldwide theater list will be nice to know other things
like preferred and accepted distribution methods (DX115, usb2, usb3,
esata, internet,... other experiments coming), sound installed to send
a 7.1 or any new fancy format when available, etc.
For this, I think a completely open and shared will be ideal and the
most up-to-date, but not sure it can happen in the near future. Major
laboratories monopoly, addiction to secrecy of distributors,
exhibitors not wanting to expose their real installations...
Good luck whoever want to try, it will happen, somehow at some point.
Manuel AC
On Mon, May 19, 2014 at 6:28 AM, Carl Hetherington <cth(a)carlh.net> wrote:
On Sat, 17 May 2014, lilian lefranc wrote:
[snip certificate download sites]
Those are useful, I think... I've looked through the Dolby data
a bit and I'm not 100% convinced of its accuracy.
Charbon Studio in Belgium already has a huge data
base with an online
generating tool:
https://www.charbon-studio.com/DCP_mastering_portal/kdm?login=demo
It contains some few errors for French servers.
That looks nice. Still, it seems to be intended only for DCPs
that Charbon Studio have mastered. In an ideal world I think
there would be a database with completely unfettered access;
i.e. search for a cinema and get its certificate on a web page,
and also some API for programs such as DCP-o-matic to find
certificates.
For French certificates, the CNC
(https://www.cnc-arcene.fr/index;jsessionid=13AFF5A28606CA0CEE2293889BED8F6B…)
references almost all cinemas with their certificates. Their are some errors
(the same than charbon as they got them on this web site) and certificates
have a bad coding but this is a good way to get certificates city by city.
Some certificates are missing as they are only referencing specific cinemas.
Also interesting. Thanks for the links!
Best regards
Carl
Lilian
Le 16/05/2014 14:44, Carsten Kurz a écrit :
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Am 16.05.2014 um 14:15 schrieb Carl Hetherington:
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Hi all,
This is interesting. It would be good to run an open database of
cinema certificates so that indies etc. can generate keys (or we can
generate keys for them). I guess the hard part is keeping the database
updated...
Yes. There are quite a few discussions now in various forums about
creating encrypted DCPs for dedicated screens/servers. On some servers, it
is quite easy to download a certificate and email it to anyone in need. On
some systems, it is complicated. Not every cinema has skilled stuff, most
would probably not even know what a 'certificate' is and how to obtain it.
Some only know about equipment serial numbers.
In germany we have received more and more inquiries from new DCP and KDM
issuing companies during the last year.
It becomes obvious that a properly maintained certificate database is a
trade secret and an instrument to keep competition at distance, as all these
companies are fighting for business with the distributors while prices for
DCP and KDM generation are decreasing.
A public database or automated system would change that completely. It is
not clear, however, how things like FLMx or TKR will evolve in short term. I
have been to the Motionpicturesolutions-Site recently and it seems they are
also working on tools to change booking and key retrieval. What they are
trying to do is offering a content catalog where cinemas can book content
and retrieve keys automatically, upon confirmation through the license
holder. While that will probably mean some manual intervention by the
studios booking department in the beginning, it can easily be seen that at
least for classic titles this will become a fully automated
video-rental-shop-type system rather sooner than later. Other companies like
Sony are working on similiar systems.
The best thing of course would be if every cinema/equipment operator
would have a certificate stored for easy access. You could even put it up on
a website and simply mail the link to any interested party.
But for now, the major issue is, if someone want's to issue an encrypted
DCP, how does he actually get the certificate for the equipment intended for
screening.
Maybe this could also be something we could put up on the DCP-o-matic
site as a help, like the list of tested equipment.
E.G. the GUI of our Sony 515 allows to download the certificate to a
connected computer through the web interface. I know it's the same for
Christies IMB and Doremis IMS. Doremi has an online service and FTP site to
retrieve certificates by serial number. I know Dolby has an FTP site as
well, but I think it is not open.
- Carsten
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