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Author
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Topic: "Locking Out" Frame Rates?
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Antti Nayha
Master Film Handler
Posts: 268
From: Helsinki, Finland
Registered: Oct 2008
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posted 01-15-2014 02:47 AM
Oddly enough, Dolby Cat 745 still doesn't officially support 30fps or 50fps even though Cat 862 does. I've heard conflicting reports about this in practice, though.
Which Dolby System version are you running?
Here are the current capabilities as listed in the release notes for 4.7.0.42:
DSS200 or DSS220 with CAT745 IMB: JPEG 2000 4K 2D: 24, 25 JPEG 2000 2K 2D: 24, 25, 48, 60 JPEG 2000 2K 3D: 24, 25, 48, 60 MPEG2: 24, 25, 48, 60
DSS200 with CAT862 IMB: JPEG 2000 2K 2D: 24, 25, 30, 48, 50, 60 JPEG 2000 2K 3D: 24, 25, 30 MPEG2: 23.98, 24, 25, 29.97, 30
DSS100 with DSP100 IMB: JPEG 2000 2D: 24, 48 JPEG 2000 3D: 24 MPEG2: 23.98, 24, 29.97, 30
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Steve Guttag
We forgot the crackers Gromit!!!
![](http://www.film-tech.com/ubbmembers/268e.gif)
Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 01-15-2014 06:30 AM
Antti...I pointed out this misprint to Dolby already.
As of Dolby System 4.7.0...the CAT745 now supports 30fps. In fact, the current list for 4.7.0.42 is:
System Frame Rates for DCP Playback DSS200 or DSS220 with CAT745 IMB JPEG 2000 4K 2D: 24, 25 JPEG 2000 2K 2D: 24, 25, 30, 48, 50, 60, 96, 100, 120 JPEG 2000 2K 3D: 24, 25, 30, 48, 50, 60 MPEG2: 23.98, 24, 25, 29.97, 30
DSS200 with CAT862 MB JPEG 2000 2K 2D: 24, 25, 30, 48, 50, 60 JPEG 2000 2K 3D: 24, 25, 30 MPEG2: 23.98, 24, 25, 29.97, 30, 47.95, 48, 50, 59.94, 60
DSS100 with DSP100 MB JPEG 2000 2D: 24, 48 JPEG 2000 3D: 24 MPEG2: 23.98, 24, 25, 29.97, 30, 47.95, 50, 60
If you download the current release notes from the DolbyCustomer portal (must have access rights), you'll get the current release notes. Dolby Secure is to be shut down and may no longer contain the most recent information anymore.
Prior to 4.7, the CAT745 would not support 30fps. I have tested the CAT745 with 30fps on 4.7.0.42 and can confirm that it does work.
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Jim Cassedy
Phenomenal Film Handler
![](http://www.film-tech.com/ubbmembers/4115a.jpg)
Posts: 1661
From: San Francisco, CA
Registered: Dec 2006
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posted 01-15-2014 09:41 AM
Thanks Antti & Steve! quote: Antti Nayha Which Dolby System version are you running?
I'm working at another location across town for a couple of days, so I won't be back at that particular theater until this weekend. I'll take a look at the software versions, but I feel that the answer to my question is most likely in the table of info you posted.
I was just curious since, as I said in my original post, so far I've only encountered this issue at only one theater, out of the dozens I've used this same 30fps DCP file at.
I assume the "problem" is only limited to playing back DCP files, since DVD's, & blu-ray disks, as well as a satellite receiver, which I assume are outputting at 30fps work fine through the DVI-D inputs.
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