dvd player/sound sync - general question

Could be either or both. This is a well known problem that affects many dvd players, cheap or expensive. It is generic to DVD I think. Some people say it worse with digital audio than with analogue.

There are multiple factors.

1. The player. Just Google and you will see that many brands are said to have this problem. Sony, Pioneer, as well as unknown brands.

[quote] The main key feature that made me keep this DVD player is the audio sync delay function. This lets you delay your audio in 20 ms increments anywhere from 0-100 ms. This is useful because with my Samsung DLP, the video is delayed slightly, such that I notice lip sync issues when running the audio straight to the receiver over digital coax.

With the delay set to 60 or 80 ms, I don't notice any lip sync issues. I don't believe any other DVD player under $200 offers this feature. The Sony NS-75H claims to have audio sync delay, but it only works on the analog audio outputs, which are useless if you have a home theater and want to run DD or DTS to your receiver. This audio sync delay feature along with the nice user menu made me keep this DVD player. [/quote]

1. The movie itself. Some movies are just plain out of sync to begin with, and the DVD reflects this. Lost In Space is an example.
2. The DVD iItself. Pioneer DVD players and Village Roadshow DVDs are a potent combination, and frequently exhibit this fault, though the same player playing other DVDs will play them without a problem and conversely the same DVD played on another player will also play back without a problem.
3. Firmware revision. Sometimes updating firmware can make a difference.
4. Individual sensitivity to the problem. Different people are more or less sensitive to this problem. Personally, I pick it every time and find it extremely distressing, whereas others watching exactly the same disc at exactly the same time either notice nothing or barely notice anything wrong.