Hey Russ thank you for your quick response. Actually Disk Utility gave me the same error. I burned disk at 2.4x speed and it still tells me to try a lower speed. I did test out the img. file through my DVD player and it played fine. Also tried burning through iDVD, (which has worked in the past also) but that freezes just before finishing while multiplexing. I did read through some old posts from you regarding that specific error, but that disk utility route didnt work for me. Any other thoughts?
Well, given that you can write an img, I'd guess the most likely culprits to be the media (hopefully) or the optical drive. Easiest step is to try a different brand. Bad batches are occasionally manufactured. FWIW, I am a long-time user of Verbatim and have rarely had a problem.
So try another brand and see whether it will burn from the disk image.
If it does not, try a short section of a different movie. And if that failed, it would point strongly toward the drive.