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City: DELCO, PA
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WEDNESDAY, DECEMBER 10, 2008 (8:35 AM)

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How does DVD copy protection work?

(I'm feeling determined)

I was going to ask that question here. But then I decided that perhaps, in this case, a search engine might provide a better answer. So I went to Ask and, well, asked. I typed in the exact subject to this blog. A few results down was this interesting page:

A history of DVD copy protection [dive into mark]

With disk storage so cheap these days, it would be nice to do properly with DVDs what I've done with CDs and have local on demand viewing without having to dig through boxes or setup shelves for these bulky disks. DVD ripping is a nice idea too. I'm just a little skeptical about the transcoding.

What really triggered this search for me was simply not being able to copy the files off of a DVD to HD. I would get a permission error. I literally could not read the DVD as if it was normal digital storage media. However, if I first played a bit of the DVD with the DVD Player program, I could then quit out of that and use Disk Utility to make a DVD master file (.cdr). Oddly enough, DVD Player refuses to play a mounted DVD master image. It complains about not being able to verify copy protection. Fortunately VLC has had no such complaints yet. Although it does have other issues like not going straight to the main menu.

I wonder if at some future date it will be impossible to play programs that do not have some form of DRM attached to them. I suspect the industry is heading that way.

Category: Religion & Philosophy

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