I bought a movie which would not play all the way through. At about 1:25:25 playback would stall and after a minute or so it jumped to the end of the next chapter (or maybe even farther than that). I tested the DVD in five different players (two computer DVD drives and three DVD and Blu-Ray players) with similar results. One of the Blu-Ray players did better than any of the others, but the DVD was clearly defective. So I returned the movie for a replacement. The vendor did not give me any grief, but the replacement DVD did the exact same thing!
I visited the distributor website and considered if it would be possible to Stream or Download all or part of the movie -- not gonna happen!
But I noticed in the distributor website blog a post from another person who had the exact same problem and, needless to say, the distributor did not even acknowledge the complaint.
I decided to perform an experiment using ImgBurn. I used ImgBurn to Create an Image File from the DVD. Predictably, there were unrecoverable read errors and ImgBurn pointed to the VOB file that was defective. I confirmed that by attempting to play through that VOB and confirmed that the playback stall was in that VOB file and the "SKIP" was to the next VOB file.
Not wanting to give up on the movie since I realized there was no place to obtain a working copy, I set ImgBurn to READ AT 1X. That is much slower than the default MAX (which with my equipment usually comes out to about 8X).
BUT HERE'S THE GOOD PART!
When ImgBurn got to the defective area if reported a read error and after 2 retries, it was able to continue. I think there may have been one other place where a read error was reported, but at the very slow rate, the ISO and MDS files were created and I was able to burn a proper DVD on an Inkjet Printable DVD+R DL and then copy the label from the original onto my backup.
When the backup copy I made gets to 1:25:25, there is a small jitter and pixelation, but it plays through and I now have an acceptable movie.
I tried to engage the person who reported the error on the distributor blog, but I guess he has moved on to other things (basketball?). Anyway, I solved my problem and I give a big thumbs up to ImgBurn 188.8.131.52
P.S. If you attempt this method, be aware that the Read Rate will remain at 1X until you set it back to MAX which is the normal setting for Read.