[MPlayer-users] dvd pts timestamp resets are different without audio?

[Roger Pack]

Hello all.
Behold, I reveal a mystery.
With some DVD's, if I play it "with audio", the PTS timestamp resets at 3498.03
however, if I play it back with "-nosound" it says the reset occurs at 3499.40

Any ideas what might be going on here?
-r