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» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Star Wars goes to Non-Sync

   
Author Topic: Star Wars goes to Non-Sync
Randy Haberthur
Film Handler

Posts: 1
From: Des Moines, IA, USA
Registered: Jul 2002


 - posted 05-19-2005 04:02 PM      Profile for Randy Haberthur   Email Randy Haberthur   Send New Private Message       Edit/Delete Post 
I've had two different theatres call me with the same problem. Half way through the 6th reel the DTS6AD decides to go to non-sync. Anyone else experienced this?

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Dominic Espinosa
Phenomenal Film Handler

Posts: 1172
From: Boulder Creek, CA.
Registered: Jan 2004


 - posted 05-20-2005 03:41 AM      Profile for Dominic Espinosa   Email Dominic Espinosa   Send New Private Message       Edit/Delete Post 
I've been experiencing sporatic dropouts to analog on a perfectly aligned DTS unit.

I'm thinking there's some issues with these prints.
Incidentally the prints in question are #8180 and #8181.

The DTS system is determining that the timecode in R6 in your case is the end-of-show code and thus terminates to non-sync.

If the firmware's up to date and everything jibes I'd say swap the reel.

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John Hawkinson
Film God

Posts: 2273
From: Cambridge, MA, USA
Registered: Feb 2002


 - posted 05-21-2005 02:10 AM      Profile for John Hawkinson   Email John Hawkinson   Send New Private Message       Edit/Delete Post 
I don't think that DTS has an "end-of-show" code. End of show should drop to analog just like during the show, unless your automation tells it to do something different...

So what happens if you block the led on the DTS reader with a piece of paper mid-reel? Does it correctly fault to analog, or do you go to non-sync?

Sounds like an automation cable/wiring configuration problems...

--jhawk

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Michael Schaffer
"Where is the
Boardwalk Hotel?"

Posts: 4143
From: Boston, MA
Registered: Apr 2002


 - posted 05-21-2005 02:19 AM      Profile for Michael Schaffer   Author's Homepage   Email Michael Schaffer   Send New Private Message       Edit/Delete Post 
quote: John Hawkinson
I don't think that DTS has an "end-of-show" code.
It does. At the end of the program, DTS pulses to non-sync.

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John Hawkinson
Film God

Posts: 2273
From: Cambridge, MA, USA
Registered: Feb 2002


 - posted 05-21-2005 02:30 AM      Profile for John Hawkinson   Email John Hawkinson   Send New Private Message       Edit/Delete Post 
Whoops, right-you-are, Michael.
quote:

The NON-SYNC (NS) pulse (from the DTS-6D) will be sent when DTS timecode is lost during the last 60 seconds of the last reel.

I plead the late hour and our automation that handles this case
differently (I assume the 6AD has the same logic as the 6D here).

--jhawk

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Michael Schaffer
"Where is the
Boardwalk Hotel?"

Posts: 4143
From: Boston, MA
Registered: Apr 2002


 - posted 05-21-2005 03:33 AM      Profile for Michael Schaffer   Author's Homepage   Email Michael Schaffer   Send New Private Message       Edit/Delete Post 
Although I don't know if there is any form of end-of-show code actually in the timecode. Probably not. The problem here might be that timecode is briefly lost in a place where the DTS-6AD thinks it is at the end of the last reel, and so it "figures" it has to end the show. None of our 6D units seem to have that problem - at least I haven't been notified of any such occurence, and that is something that no one is likely to "miss" in a sold out house...

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-21-2005 06:50 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Non-sync is actually a better place to be. The dialog in that movie sucks!

Mark

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Michael Schaffer
"Where is the
Boardwalk Hotel?"

Posts: 4143
From: Boston, MA
Registered: Apr 2002


 - posted 05-21-2005 09:12 PM      Profile for Michael Schaffer   Author's Homepage   Email Michael Schaffer   Send New Private Message       Edit/Delete Post 
I think you have a point there, Mark. The brainless, flat dialog and also the constant background doodling of recycled Star Wars music - John Williams did not really come up with any exciting new material for the trilogy - might make it hard to notice when the system switches to non-sync, especially when the soundtrack album is running on the MDS [Big Grin]

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Maddison Lake
Film Handler

Posts: 18
From: Hayesville, NC, USA
Registered: Dec 2004


 - posted 05-22-2005 02:21 PM      Profile for Maddison Lake   Email Maddison Lake   Send New Private Message       Edit/Delete Post 
I have been having troubles with the automation on my 6AD! I have seen (not a big deal just reprogrammed it)when a splice goes through (which looses DTS time code), It switched to non-sync AND DIDN'T COME BACK OUT! so basically my damn automation screwed it over. Among a variety of other problems I have just replaced my 6AD with another one, the last unit was not letting anything come out whatsoever.

-ML

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Frank Dubrois
Jedi Master Film Handler

Posts: 896
From: Cleveland, OH
Registered: Mar 2005


 - posted 05-22-2005 09:51 PM      Profile for Frank Dubrois     Send New Private Message       Edit/Delete Post 
For some reason, Fantastic Four trailer (att) doesnt play in DTS, but when the movies kick in, DTS is fine. No biggie here.

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Dominic Espinosa
Phenomenal Film Handler

Posts: 1172
From: Boulder Creek, CA.
Registered: Jan 2004


 - posted 05-23-2005 12:38 AM      Profile for Dominic Espinosa   Email Dominic Espinosa   Send New Private Message       Edit/Delete Post 
The FF4 trailer was a splice-on. But it apears that it has faulty timecode as well. It's like that on all 3 of our prints.
I wonder if the DTS discs even have the FF4 soundtrack on them [Wink]
I get some poor timecode detection during Mr. & Mrs. Smith trailer as well, but that one does play in digital without dropping out.
Go figure.

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Bill Carter
Expert Film Handler

Posts: 162
From: Minneapolis, Minnesota
Registered: Sep 1999


 - posted 05-23-2005 09:47 AM      Profile for Bill Carter   Email Bill Carter   Send New Private Message       Edit/Delete Post 
The problem with the Fantastic Four trailer is especially annoying because the printed face of the feature disc says it is on there, but it doesn't play.

--------
I believe the 6AD has an adjustable setting for how long it will "free run" before switching out of digital when timecode signal is lost. If your timecode interruptions are shorter than a couple of seconds, this might be enough to fix it.

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Dominic Espinosa
Phenomenal Film Handler

Posts: 1172
From: Boulder Creek, CA.
Registered: Jan 2004


 - posted 05-23-2005 02:21 PM      Profile for Dominic Espinosa   Email Dominic Espinosa   Send New Private Message       Edit/Delete Post 
I'm not sure if the timecode dropout delay is configurable however it's 4 seconds by default isn't it?

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Mike B. Smith
Film Handler

Posts: 82
From: Universal City
Registered: Nov 2004


 - posted 05-24-2005 03:20 PM      Profile for Mike B. Smith   Email Mike B. Smith   Send New Private Message       Edit/Delete Post 
The trailer has timecode but the DTS will not play, reason for this is the Star Wars III discs have Fantastic Four version "H". A last minute remix was done and a new trailer version "I" was created and attached to the print. Many may not have noticed this because version "I" is on the DTS trailer subscription disc and therefore played with the feature. As to DTS systems freewheel, they do not have an operator "configurable" fallback time, all DTS systems should switch to optical after approximately four seconds from start of receiving no timecode input.

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