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Author Topic: Issues with Digital Projection in general Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 09-04-2018 04:56 PM                     quote: Harold Hallikainen There was a proposal (I think it was by Fox) for automated key delivery (actually automated key fetching) called. Theater Key Retreival (TKR). The server or TMS does an HTTP request with the URL built upon a URL included in the DCP and the IMB public key thumbprint. I always thought this was great, but it does not seem to be going anywhere. A while ago I attended a session given by the Gofilex people. They are supporting many sites across Europe with digital DCP delivery (and occasionally also KDMs). Their analysis why server based TKR doesn't work is simple - theater operators do not want their systems to be connected to the internet. Yes, there are firewalls, but... The larger sites without these concerns usually run a TMS which takes that burden from them anyway. For me, KDM reception by email and application to our servers is so simple and hassle-free, that I simply do not care about TKR. Hotfolders and automatic ingest comes very close to TKR. The only issues I have with digital projection is KDMs and DCPs appearing unnecessary late. Would TKR help with that? As KDM service companies or studios issue KDMs late for email transfer intentionally, why should they issue them earlier with TKR? They would probably think - 'Wow, as TKR is automatic, we can issue our KDMs even later!' Just-In-Time KDM is coming... - Carsten  |  IP: Logged Frank Cox Film God Posts: 2234 From: Melville Saskatchewan Canada Registered: Apr 2011 posted 09-04-2018 05:34 PM                        Cinema servers (or at least GDC cinema servers) run on such ancient versions of Linux (Fedora Core 5 from 2006 is what I have here) that connecting them directly to the Internet would be a really bad idea.  |  IP: Logged Harold Hallikainen Jedi Master Film Handler Posts: 906 From: Denver, CO, USA Registered: Aug 2009 posted 09-04-2018 06:31 PM                        Thanks for the comments! Through Network Address Translation, anything past the router would not be available to the outside world. Only HTTP connections from inside the theater could get out and get a response. No outside device could establish a connection. That's how my home network is set up (other than one internal IP address I allow external access to). So, I think it can be done securely. To get keys automatically, it seems that there has to be SOME connection to the internet, whether that's a mail client or an HTTP client. If the keys are coming in via email and copied to a flash drive that is then carried over to the internal network, there is an "air gap" providing security, but that's not very automated. If the mail client can copy emails to a server on the internal network, it appears the internal and external networks are electrically connected somehow. So, I like the simplicity of TKR and believe it does not pose a security risk (with proper firewall with NAT). Again, thanks for the comments! Harold  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 09-04-2018 06:47 PM                     quote: Jeff Fruchey My biggest headache has been with the hard drives we receive. Going back on this topic above: I've done the following: If the can that the HD is mounted in is all tweaked where the unit cant slide into the CRU slot, I'll take out the HD from this can and another can, remove the HD from the good can and put the needed HD into the can that isn't tweaked out of proportion. After the ingest is completed is when I'll return all back to normal. Can is kind of okey, but can't lock the lever being the can is so tight going in the CRU slot, and that is after removing all of the paper? Just shove in the can until the activity light comes on and leave it alone-don't lock the lever. The back plug on the can has met the connector in the slot. You need the lever to pull out the can from the slot.  |  IP: Logged Frank Cox Film God Posts: 2234 From: Melville Saskatchewan Canada Registered: Apr 2011 posted 09-04-2018 07:56 PM                        I've had at least two that were bent out of shape to a point that they would still run but not slide into the slot. So I just hooked them up with that external USB boot thing that they used to send along with the drives and loaded it that way. Takes longer that way but it gets there.  |  IP: Logged Mike Blakesley Film God Posts: 12767 From: Forsyth, Montana Registered: Jun 99 posted 09-04-2018 08:19 PM                        Mostly "loose screws" has been the only problem with drives. The first time it happened, I was surprised at how little they have to be unscrewed before the drive won't slide into the bay.  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 09-07-2018 08:21 AM                     I've seen drive tray designs not using any screws at all to keep the disk in place. The stupid thing is, some of those trays have such specific screws that if you lose one, you'll have a hard time finding another one that does not only fit the winding, but doesn't stick out too much to block the sliding mechanism.  |  IP: Logged

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