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Author Topic: "Ben Hur" -- DCP Sound Sync Issues Manny Knowles "What are these things and WHY are they BLUE???" Posts: 4247 From: Bloomington, IN, USA Registered: Feb 2002 posted 03-26-2013 07:17 PM                     "Ben Hur" 4K DCP is out of sync here -- is anyone else running this? Are you having sound behind picture? We've been running DCP's with 100ms delay for over 2 years. I'm running this with no delay, and sound still seems to lag behind picture by about a frame. Actually, the lip sync is "rubbery" -- meaning the discrepancy seems inconsistent -- sometimes bad, sometimes worse. Update -- It's definitely gotten worse -- we're about a full second out of sync now. Here's the link to the "Ben Hur" thread in the Feature Info Forum.  |  IP: Logged Manny Knowles "What are these things and WHY are they BLUE???" Posts: 4247 From: Bloomington, IN, USA Registered: Feb 2002 posted 03-26-2013 10:21 PM                     Update: Rebooted both DSS200 and CP650 during intermission. Part Two played fine. I am testing Part One and, so far, the problem seems to have cleared. In other words, the DCP seems fine now. CP650 is running version 2.3.6.6 DSS200 is running version 4.3.5.13  |  IP: Logged Sam King Expert Film Handler Posts: 120 From: Los Angeles, CA Registered: Oct 2006 posted 03-26-2013 11:17 PM                     The Dolby show players have a nasty little habit of randomly going out of sync slightly. Hit pause, pause the movie for a second, then hit play. That always worked for us when we had Dolby.  |  IP: Logged Manny Knowles "What are these things and WHY are they BLUE???" Posts: 4247 From: Bloomington, IN, USA Registered: Feb 2002 posted 03-27-2013 12:07 AM                     Thanks -- I'm documenting this now for the other operators -- I'll add that as the first line of defense -- then a full stop/restart (that's how we used to get our subtitles back sometimes) -- then, if those don't work, a full reboot. To err is human, but to really f*ck it up, you need computers!  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 03-27-2013 12:31 AM                     Had that happen on a 30 second clip prior to a feature start for a premiere.....pausing during the QC check worked and at show time no problem.  |  IP: Logged Manny Knowles "What are these things and WHY are they BLUE???" Posts: 4247 From: Bloomington, IN, USA Registered: Feb 2002 posted 03-27-2013 01:00 AM                     I'm curious if anyone reported this to Dolby when it happened..?  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-27-2013 06:51 AM                     I have seen this too and have reported to Dolby. However the sync is was on the order of seconds off...not just a little! Pause/start seemed to get it resynced. Dolby did see the issue in the logs too. The 4.5.4 (2) can also exhibit the problem and that is the one that I reported the problem to Dolby. I don't know if I've ever heard of this problem with 4.5.3 (9)...which I maintain is the most stable non-DCI version of the software. Note, I've had other oddities with other brands too...like odd channel remapping...in that case, only rebooting solved it.  |  IP: Logged Manny Knowles "What are these things and WHY are they BLUE???" Posts: 4247 From: Bloomington, IN, USA Registered: Feb 2002 posted 03-27-2013 06:14 PM                     The word from Dolby is that the black frames during the Overture are the culprit. I was informed that the black frames were heavily compressed, possibly to save disk space. This problem came up a year ago with "Ben Hur" and this was their finding.  |  IP: Logged

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