Since more and more folks are using flatscreen TV's as client monitors (especially in offline situations), more and more folks run into the sync issues that occur.

Would be great if Avid would have a client monitor output that would allow a compensation for this delay.

The feature needs to keep both the source/record monitor to match in addition to just adding compensation. It is easy enough to get an audio delay device to dial in the amount needed. Many new amplifiers used in home theater also provide this feature. The issue is now when looking at the source/record, the audio will be late while in sync on the client monitor. Right now audio is in sync with source/record, but early on client.

Michael

Amen.

I'm currently delaying my audio monitoring path in order to get in sync with the plasma. Means that my source/record monitors are out of sync with sound.

I wonder, if one were to use a second graphics card, rather than an Avid BOB,  and send video over DVI to a plasma using FSP, would that be in sync?

My understanding is that the delay is in the image processing within the plasma and not i the connection to the monitor. Refresh rate and all that good stuff. Have you tried picture and sound over HDMI to the monitor - that would have sync coming from the Avid hardware. Any delay would then be in the monitor processing itself.Many consumer amplifiers have an audio delay feature to correct for this which is great for DVD and broadcast, but in the case of an Avid you are serving two video masters from a single audio source where one has a picture delay. That is the challenge.

Michael

Ah yes the processing of course. I imagine then there could be a case for testing as many LCDs and plasmas as possible to find which has the fastest processing, a time consuming affair that would be.

JVC claims their DTV24 LCD is down to a 1 frame delay. I've seen as many as 4 frames on some monitors.

If you loop your sound through your plasma/lcd (ie: out of the avid into the plasma), and then into your amp or mixing desk, you client monitoring will always be in sync.

Just make sure you have alternative patching for when you play out to tape.

FYI we have a couple DTV24 LCDs here and there is no noticeable delay via SDI, - and whatever delay there is, is probably sync'd to the same delay my LCD computer monitors have.

If your monitor has a 'Game Mode' feature, you can use that to decrease delay. It will not remove it completely . It disables some of the image processes (including but not limited to color adjustments, noise reduction, sharpening, etc). Also, the VGA connection in some LCDs do not go through the image processing like the most of the other connections.

Lastly, make sure the monitor does not scale the image in order to conform to its native resolution. Scaling also induces some delay.

HTH

jakeheat:

If you loop your sound through your plasma/lcd (ie: out of the avid into the plasma), and then into your amp or mixing desk, you client monitoring will always be in sync.

That's assumin the LCD/plasma corrects the sound output for all its inputs, and does it correctly. Also, it usually limits you to two tracks, and unbalanced analog lines. And it still has your client monitor out of sync with your Source/Record monitors.

I was just pointing out how to get your client monitor to sound in sync.

If you're using a non-professional display, then I shouldn't worry too much about unbalanced audio monitoring.

If Avid were to introduce a playback delay on the Source Record monitors, how would this affect the adding of keyframes or locators on the fly - would there need to be a keyboard delay too?  And what about when you playout to tape will this be delayed or will your layback be insync with you LCD?

glad to here that i am not the onlyone who cares about this.

may i ask how you solved that issue in your system? all of the mentioned solutions seem improvised to me still.... delay box, loop thru lcd monitor etc....

jakeheat is also right with his comment about playback... "And what about when you playout to tape will this be delayed or will your layback be insync with you LCD?"

my wish would be (if any of the programmers is reading this). create a new setting where you can seperately control the delay of the desktop monitors and the audio output of the adrenaline/mojo. to make it perfect, it would be nice to be able to safe different settings, like for editing or for doing playouts.

michael! any comment on that? ;) wonder if this could come true??

cheers

sven

may i ask how you solved that issue in your system?

Audio delay, in-line on my audio MONITORING only. This will not affect playouts, only monitoring. I live with the fact that my S/R monitors are out of sync.

i compared some of the lcd flatscreens: jvc dt-v24l3d, sony lmd-2450w and tvlogic lvm-070w (couldn´t get a 24inch one).

there is a quicktime on my server to show how the delay looks like:

http://www.finaledit.de/monitor/lcdflatscreendelay.mov

hope the industry will get this fixed soon.

cheers

sven