It was my understanding that the track layout on a DVD (4.7 Gb) began at the center and spiraled out to the outer edge.
I have a DVDR that contains a movie (vob, ifo and bup files). The first part of the movie (VTS_01_1.vob) is in a damaged area of the disk and I get read errors and messed up pixals, both when reading the disk on my PC and when playing it on a DVD player.
I decide to scan the disk surface to see what portions were damaged and unreadable.
I used Nero CD-DVD Speed 220.127.116.11 to do the scan.
It determined that the first 97% (about 4200 Mb) was good (green) and then it encountered a series of bad sectors (red, yellow with an occasional green).
The reports says that these bad sectors are in locations above 4200 Mb which I assume is near the outer edge of the disk surface.
I had expected that these bad sectors would be near the beginning, since that is where they are in the movie.
Have I got it backwards? Does the video start on the outer edge and spiral in? Sounds weird to me.
I know when I burn a DVDR is starts at the center and works it way toward the outer edge.
I also know that the bad sectors on this particular DVDR are in the file (VTS_01_1.vob) and that the Nero Scan program indicates that the 'postition' of that file is 134 Mb.
Very confusing (at least to me).
Can anyone explain this apparent contradiction?