How to fix a dvd with video/audio out of sync?

I have a dvd with video and audio more than 2 seconds out of sync. Does anyone know of a way to fix this? The out of sync problem ruines the watching of the concert. I do want to keep the menu’s though.

Can anybody help me? Or point me in the right direction?

I am no expert. However, I envision using an approach like the one ChickenMan suggests in:

The concept is tht you are going to have to de-multiplex the VOB files, apply an offest to the audio, and re-mux them.

Is the audio skew at the beginning of the concert the same amount as at the end of the concert (e.g. 2 seconds)? That is the easier case to fix.

I think you are going to have to rebuild the dvd menu.

Hope that points you in the correct direction.