Film-Tech Forum ARCHIVE: Audio playing slowly

This is topic Audio playing slowly in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by Phil Ranucci (Member # 3820) on 02-08-2010, 02:30 AM:

Barco DP100/Kodak server/Real D
Loaded a drive with a few clips, both played in 3D fine, but one sounded like it was playing at 1/2 speed, real slow. Any ideas? Believe me everybody was floored by the problem, eventually a new non-Kodak server was used and all was well. But why would one clip play fine and another not? The only difference that we knew about was that one was 6 channel PCM and the other LtRt PCM.
Anybody?

Posted by Jussi Siponen (Member # 5572) on 02-08-2010, 05:12 AM:

There are two allowed audio sample rates for DCPs: 48 kHz and 96 kHz.

96 kHz sound played back at 48 kHz results in 1/2 speed audio. Both sample rates should work just fine, but software bugs are not exactly unheard of...

Posted by Phil Ranucci (Member # 3820) on 02-09-2010, 01:37 PM:

Ended up bringing in another server that doesn't require generating a KDM??? I wasn't there but was told it played fine. The lab still has no idea what the problem was with the Kodak server, and neither does Kodak.

Posted by Demetris Thoupis (Member # 833) on 02-10-2010, 12:21 AM:

Server without KDM security [Eek!]

I want 5

Posted by Olivier Lemaire (Member # 5579) on 02-10-2010, 05:03 PM:

gimme one too [Smile]

Posted by Julio Roberto (Member # 4976) on 02-10-2010, 05:12 PM:

Do they send the trailers encrypted as well? Sounds like a lot of trouble when most trailers are already available on the web at HD resolutions ....

Posted by Matt Fields (Member # 3211) on 02-10-2010, 05:33 PM:

Trailers do not need a license.

Posted by Phil Ranucci (Member # 3820) on 02-11-2010, 02:11 AM:

These weren't trailers, they were clips from movies for a tribute. They needed (and had) valid keys, but once we found the clip that played slow we reloaded it and the keys stopped working for that clip. Major finger pointing, and I still haven't heard a good explanation of what happened.
I was told the server was either a Quvis or the one that went under, and will play DCI content without a key. It came from a lab in L.A., but I was elsewhere when this was going on so am not certain of the details.