Playback Video Device?

Dear PrP CC Users,
I wanted to ask a few questions regarding setting up playback for best accuracy performace when dealing with video and sound.
In Preferences > Playback. I have 4 Dell monitors (connected to GPU via HDMI, DVI-D x2 and a DisplayPort) and a Samsung TV (connected to a DeckLink Blackmagic Mini Monitor Video I/O). The 4 monitors for me to work off from and the TV for the Director/Client.
My query is regarding the Audio Device selection. I have it selected as Adobe Desktop Audio, there is the option of Blackmagic playback (my amplifier is also connected to the TV).
My regular desktop audio is connected to my Mac Pro output jack at the rear to my amplifier.
When dealing with editing projects such as music videos, syncing is an important factor and I want to make sure where I'm getting the most accurate synced representation. What is the best Audio Device to use and should I Offset my Video Blackmagic Playback, is there some way to properly calibrate for this? Also, depending on that, where should I focus my attention when making sure audio is synced to video. - I'm not talking about how to merge audio with video clips and syncing using the clapper-board. I'm talking about playback accuracy once sound is synced. As often the client/director will say its out of sync on the TV when its not out of sync with me on my monitors.
Perhaps if someone can explain on here or recommend me a link to how best set up and calibrate for video/audio sync whilst editing, it would be greatly appreciated.
Thank you.

I have a similar setup as the OP, 4 computer screens for the work space and a Plasma connected via a Blackmagic HDMI output for the program monitoring. I use the BM card AES outputs for the audio monitoring going via a Dolby decoder. I measured the video delay to the Plasma and it was 38ms compared to the audio. I have set a delay in the Dolby box to 32ms, this plus the acoustic delay form my speakers gives me good lipsync. (There is a delay of aprox 1ms for each foot you are from the speakers). I used to have a crt as my grading monitor fed from the SD SDI op of the BM card, this had a delay of 50ms, caused by the hardware convertor in the BM card.
As the brain expects to see something before it hears it, if something looks slightly out of sync it is likely that the audio is early.

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NVIDIA GeForce 7800GT:
Chipset Model:          GeForce 7800GT
Type:          Display
Bus:          PCI
Slot:          SLOT-1
VRAM (Total):          256 MB
Vendor:          nVIDIA (0x10de)
Device ID:          0x0092
Revision ID:          0x00a1
ROM Revision:          2152.2
Displays:
VGA Display:
Resolution:          1920 x 1080 @ 60 Hz
Depth:          32-bit Color
Core Image:          Supported
Main Display:          Yes
Mirror:          Off
Online:          Yes
Quartz Extreme:          Supported
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is th emessag eI get on two Dual 2gHz G5s.
VLC Player plays th eDVDs jus fine...but APple DVD Player not.
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This is the DVD drive BTW:
SONY DVD RW DW-U21A:
Capacity: 7.33 GB
Model: SONY DVD RW DW-U21A
Revision: AADB
Serial Number:
Removable Media: Yes
Detachable Drive: No
BSD Name: disk2
Protocol: ATAPI
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Socket Type: Internal
OS9 Drivers: No
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Valid video device not be found for playback (-70017)

Hello
I have read an identical unsolved discussion to my problem here: http://discussions.apple.com/thread.jspa?messageID=3067284&#3067284
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Welcome to Apple Discussions!
Was your application migrated from another Mac?

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Do your part in supporting your fellow users. If a response has been Helpful to you or Solved your question, please mark it as such as an aid to other lost souls on the forum.
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Message was edited by: Kristina Latour
Message was edited by: Kristina Latour

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nopenshaw3 wrote:
I have searched through the forums relentlessly of both Mac and third party, but I seem to never find a good, well thought out answer for my specific question. Every answer is filled with snobby know-it-alls who either respond with sarcastic answers or post links to other threads that don't answer the question in an attempt to make the asker feel like an idiot.
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Post back,
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Playback Video Device?

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