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RE: Problem with lip synch on Playstation 3.

Posted by David Aiken (A) on June 5, 2008 at 17:18:08

In Reply to: Problem with lip synch on Playstation 3. posted by clarkjohnsen on June 5, 2008 at 10:26:22:

The problem occurs because of differences in processing time for digital audio and video and can be compounded by the fact that the processing can take place in different devices, ie my LCD screen has to process the digital video signal for display purposes while my PS3 is decoding the audio bitstreams and my receiver is doing the audio digital to analog conversion. Two processing stages for the audio, one for the video, and 3 devices involved.

My receiver has a manual setting for correction lip sync. Some HDMI devices like some of the newer HDMI 1.3 receivers have an automatic lip sync correction function but I don't know how well it works since my receiver is too old to have that.

I'm not aware of a setting in the PS3 to correct lip sync. If there was one I would have expected it to be in the BD/DVD or Sound setting menus but I just looked and there is nothing there. The only other place it can really be done is in the receiver since it's actually the sound that has to be delayed since it's the video processing that takes the most time. Displays can't handle it because while they could introduce a video delay that would make the problem worse and there's no way they can do a video speedup.



David Aiken

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