I succeeded in making a backup of one side of a two sided movie.
I used decrypter and shrink. Enven though I initially got many read retries on the first side. I tried my other drive on my computer and it got a few retries but then finished.

The second side I tried everything but no good. At about the same percentage (45 - 50%) I got lots of retries -- and no good with either drive.

I tried changing the "mastering" of decripter -- still NG.

I guess it's the media? -- Although the movie plays well.

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