[TNTguy]

Because of my setup I might have to bypass video signals bypassing my receiever and going straight from my DVD player to my direct-view CRT display (as of now I use component connections). I have heard of people having lip-syncing problems with their receiver and I am wondering if it is because of a certain display type? Or because a DVI connection is used?


I am going to buy a receiver and am wondering if I need to get one with AV delay.

 

[RMLewis]

I believe the sync issue comes from the time it takes for a display to convert any incoming digital or analog signals to its native resolution. I believe this issue is mainly found in digital capable TV's. If you have a standard def TV, and are feeding it a standard def analog signal through component, I don't think you're going to have a problem. However, if you plan on getting an HDTV later on, you would want to consider getting a receiver with AV delay now so that you are prepared to deal with it when the time comes.

 

[ijd]

I have lip synch issues only after the receiver has been disconnected for a while and I forget to set the speaker distances when I reconnect it. (After a few days the receiver loses memory and goes back to a factory default).


Just adjust the speaker distances in the receiver setup if you have any lip synch problems.

 

[Perfectionist2]

I have lip synch delays which are different for cable vs DVD presumedly d/t my video processor. My AVC allows me to correct this, however, it is very difficult to do from screen dialogue.


Is there a set up disk that displays a visual and audio synch function? I can't find anything like this on Avia. Professionals do this prior to taping or filming any scene to make sure the synch is perfect.


Thanks.

 

[TNTguy]

Quote:

Originally posted by RMLewis I believe the sync issue comes from the time it takes for a display to convert any incoming digital or analog signals to its native resolution. I believe this issue is mainly found in digital capable TV's. If you have a standard def TV, and are feeding it a standard def analog signal through component, I don't think you're going to have a problem. However, if you plan on getting an HDTV later on, you would want to consider getting a receiver with AV delay now so that you are prepared to deal with it when the time comes.

Interesting. My tv is an HDtv monitor so it sounds like I better be prepared.

 

[RMLewis]

I'm currently using a DLP rear projection TV, and the native resolution is 720p. My DVD is connnected to the TV via component and is set to progressive mode (420p). Any signal I feed the TV, including the 420p from my DVD player, has to be converted by the TV to the native format of 720p. This takes a little longer than it takes the receiver to decode and play the digital audio signal from my DVD player. With my receiver, I have to set the AV sync delay to 2ms to compensate.


Most CRT HD monitors have a native resolution of 1080i. Therefore, if you are connected through component straight to the TV (in progressive mode or not), the TV probably has to do some sort of conversion to get to it's native resolution. However, some video processors are faster than others. If you are not experiencing a lip sync problem now, then you'll probably be okay. But, if you decide to get a different tv in the future, you may run into this problem.


There are many receivers out there nowadays that have the AV sync feature built in. I don't think you're going to have to pay any extra to get this feature.

 

[Perfectionist2]

But the question is how to make an accurate synch.


Is there a disk or some device that allows you to watch a precise motion on the screen that is associated with a specific sound to make sure the delay is correct. Something like the clap boards they use when making movies, etc. It's too difficult to accomplish with dialogue, as lip motion with dialogue and sound are difficult to synch. I'd like to see a hammer hitting an object or something precise.

 

[RMLewis]

Quote:

Originally posted by Perfectionist2 But the question is how to make an accurate synch. Is there a disk or some device that allows you to watch a precise motion on the screen that is associated with a specific sound to make sure the delay is correct. Something like the clap boards they use when making movies, etc. It's too difficult to accomplish with dialogue, as lip motion with dialogue and sound are difficult to synch. I'd like to see a hammer hitting an object or something precise.

I can't remember the name of the test pattern, but Digital Video Essentials has an audio/visual sync test.