Originally Posted by GMan11
It appears like I'm having an audio sync issue from the 1920 to my Mits 62828 (1080p DLP) TV. It looks like the voices are slightly off, although I'm having a hard time to figure out if its lagging or slightly ahead - Ive tried several DVD and some seem to be more obvious than others (at least in spots). I have optical audio out to a Pioneer 5.1 reciever (5 years old so no audio sync settings) and HDMI output set to 1080i.
Any ideas on how to correct this without buying a new receiver? I can still return the 1920 in case there is another viable HDMI DVD player option.
This is a really common problem these days. A combination of factors contribute toward audio/video sync issues. In almost all cases, unless you have already added an audio delay to the signal, the video is lagging the audio. The audio gets ahead because it is quicker to process and often takes a shorter path through the AV system.
I've noticed a variation between DVD players. Some are worse than others. None can completely solve this problem - probably just not exacerbate it is all one can hope for.
There is a huge variation based on the display and its mode (input type, scaling/deinterlacing/noise reduction, etc). This makes sense because most of the delay is introduced in the display due to its high levels of video processing. If the sound is routed directly to the AV receiver, then there is no way for the display and receiver to remain synchronized.
And finally, most importantly, the source material. Sometimes the source material already has inherent errors in the audio/video sync. This is actually the worst problem because if its variable from scene to scene, like it tends to be in DVDs since they master each scene separately, then there is pretty much nothing you can do it fit it. If you perfectly tune a manually introduced audio delay based on one scene, the next scene will be different and it will once again be off.
- eliminate DVD players that introduce really big and especially variable audio/video skew.
- buy a receiver with easily adjusted, individually controllable per input, audio delay (I know, this option sucks, I just did it myself)
- buy a Felston box and program the delay control buttons into your remote so you can easily tweak it up and down.
This is an industry wide problem in AV right now that has no solution in sight. Somehow we need a standardized technology for maintaining sync across multiple devices but it just doesn't exist yet.