Re: can't cp files from dvd
On Sunday 24 November 2002 11:25 pm, Noah L. Meyerhans wrote:
> On Sun, Nov 24, 2002 at 10:50:38PM -0600, Ron Johnson wrote:
> > Just now, when I tried to cp the *.VOB files from a movie disk
> > mounted udf onto /dvd-rw, I got the same "Input/output error".
>
> Believe it or not, this is a function of the fact that the DVDs are
> encrypted. I don't remember what the heck it is that you have to do to
> actually get enough of a handle on the data to be able to use something
> like DeCSS on it. I saw an interesting talk entitled "Decrypting DVD"
> at MIT a couple of years ago, and this is the first I've thought of it
> since then. Hell, I probably couldn't tell you how to do it, even if I
> did remember, without the MPAA sending the FBI after me for a DMCA
> violation. 8^(
>
> But whatever the case, you will not be able to copy .vob files from a
> DVD using normal tools like cp.
>
> noah
last night I was able to copy vob files from the dvd with no problem. This
was after using mplayer to play a dvd. Perhaps dvd playing programs somehow
unlock the dvd rom and leave it in that state?
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