Problem playing dvd

Wireless signal level may be low, have you tried moving the sending source closer to the receiver?
If that fixes it make sure the transmitter has a clear shot to the receiver.
If thats not it try connecting directly to rule out anything else but the wireless.
Make sure the wireless is not over heating.
Also are you playing the DVD with the computer? does it play fine on the computer alone?
If none of that helps please elaborate on your setup. and is the video simply synched wrong or is the video jumping and jittery as well as out of sync?