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Author Topic: DOLBY DSS-200 - verification problem Zbigniew Kaminski Film Handler Posts: 2 From: Kutno, lodzkie, Poland Registered: Sep 2019 posted 09-25-2019 12:10 PM                        Hi all. First story background. Devices: DOLBY DSS200, CHRISTIE CP2220, CP650 sound. I work at small local cinema (1 screen), we often play movies for school groups or even pre-school, something like movie on demand. So, we got here something you may call local backup storage - hard drives with movies which are in offer to play. Ok, now problem. 2 months ago we got major error with DSS - the OS has crashed so hard, that our maintance dude from cinema service company said that only fresh, new os will help. Also he says that he will install newer version - currently we have 4.9.1(22) with Show Manager ver 4.9.8.21. And we started to have problems with our backups. We simply cannot copy movie from external to server. It just in blink of eye shows that verification failed, and unable to copy. So guys, someone had aready similiar problem? Is it possible to solve it somehow? Because technician says to us, that we had previusly some bad version with such problems - errors while copy. But before that we often used our copies and they work like a charm.. Will be very grateful for any help, any clue, any possible solution!  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 09-25-2019 02:29 PM                     Not a straight solution, but you may try to use a DCP verification software to test these DCPs. - Carsten  |  IP: Logged Dave Macaulay Film God Posts: 2321 From: Toronto, Canada Registered: Apr 2001 posted 09-25-2019 03:12 PM                     Not sure if this is an issue, but older software versions ingested and exported a subset of the files in a distribution DCP. DSS exported DCPs could not be ingested in any other server type, but could ingest on another DSS. That was changed so now the DSS ingests the entire DCP, and exports a complete DCP that can be ingested in a Doremi or other server. Maybe that change means a DSS on current software can't ingest content exported from the old versions?  |  IP: Logged Zbigniew Kaminski Film Handler Posts: 2 From: Kutno, lodzkie, Poland Registered: Sep 2019 posted 09-25-2019 04:08 PM                        @Carsten - by any chance, You know such software and could give names? @Dave - if it would be true, that will cause a lot of trouble to us. I hoped that such advanced system will be backward compatible.  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 09-26-2019 05:12 AM                     dcp_inspect clairmeta dcp-o-matic (player) However, if you used pre-4.9 DSS software versions with their standard export function, and not taking the content from the generated packages folder, these tools will most likely fail recognizing the DCP because of the missing metadata files. What Dave says is true, however, it would really be bad design and thinking if DSS 4.9.x couldn't import 4.8.x exports. Not strictly necessary anyway, since the ingest module is separate from the export module technically speaking. Maybe someone else can test a known 4.8.x export on a 4.9.x system. Maybe try to ingest a simple trailer to your 4.9.x DSS, but delete/rename/hide the PKL file before (that is what DSS 4.8.x skips when exporting). - Carsten  |  IP: Logged Leo Enticknap Film God Posts: 7474 From: Loma Linda, CA Registered: Jul 2000 posted 09-26-2019 07:29 AM                        I can't see how the problem Dave identifies could be what is behind this. As I understand it, a CPL outgested from a DSS will reingest back into it (or another DSS) regardless of the software versions involved. IIRC, versions 4.8 and earlier of Show Manager (the GUI) don't outgest the PKL and assetmap files, just the actual media files and the CPL. 4.9 outgests everything. While the incomplete CPL is fine to ingest back into a DSS server, the missing files mean that no other server will even see it as a complete and correct CPL. I did a DSS100 4.7.8.7 outgest to DSS220 4.9.1.22 ingest (using a drive formatted with the formatStore command on the 100) a couple of weeks ago without any problem. In any case, that isn't the problem here: the OP reports that the initial ingestion works, but then the verification stage fails. There is a partial workaround, though - go into the DSS via FTP, look in the "generatedPackages" folder, and find the folder with the UUID of the CPL you want to export. In there is a complete set of files, that can be downloaded and ingested into another model of server. It's a partial workaround in that this will only work for unencrypted DCPs. As Show Manager generates its own metadata files (which is what you'll download here), KDMs written for the original CPL as supplied by the studio won't work, because the UUIDs will be all different. In terms of the problem reported by the OP, I've had this happen occasionally, but only ever with exFAT and NTFS formatted drives - never with ext2 or ext3. I suspect, therefore, a bug in the way that the Show Manager software handles these filesystems.  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 09-26-2019 08:58 AM                     I also don't think the partial outgests of pre-4.9.x software are the issue here per se. A lot of people would have been hit by this when they went from 4.8.x to 4.9.x initially. Many choose clean sweep and would have reingested prior DCP backups afterwards. - Carsten  |  IP: Logged

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