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Originally Posted by DrGonzo2k2
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Yes, CSS is designed to prevent people from copying DVDs. In computers the keys prevent the data from going anywhere besides your display. This way other programs or devices cannot intercept this data and capture it.
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Actually that is incorrect, CSS was designed to prevent the manufacture of DVD players that were not licensed by the DVD Copy Control Association. 1:1 copying has been possible from the very beginning but the necessary equipment was so expensive only commercial pirates were able to do so, counterfeit DVD's turned up in Asia long before CSS was broken.
Your second point is also incorrect as PC's are inherently untrusted systems, there is no secure bus all the way from DVD drive to display, the decoding is done in software which could easily have been hacked to write a decrypted MPEG output stream to disk instead of being decoded and displayed as software players contain legitimate player keys. This turned out to be unnecessary as the CSS algorithm contained several flaws that were exploited to enable content recovery.
Remember that DeCSS was designed to allow DVD playback under Linux because nobody would pay the fee required to produce a licensed player. Enabling the conversion to other formats (primarily back to DVD MPEG2 or MPEG4) was not the authors intention and is merely a side benefit.

Eeeeek enough rambling......
FairUse looks pretty damned good, I never realised it had been resurrected. Personally I'll be sticking with Gordian Knot as it can do a few things that FU can't do with the downside that it is more complicated to operate but either will do an excellent job.
@24va: Going below 0.17 bits per pixel (this figure is in the list where you choose output resolution) for your encodes will generally produce poor output quality. At full VGA resolution even 500MB for a 2 hour movie is pushing the codec very hard, fortunately the small screen size helps hide the lack of detail.
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Originally Posted by ToddHarper
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Hey,
I downloaded fair use and tried to copy "Spiderman" but all that came out was a music file...something about a missing codec? If you know what is wrong, please respond.
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What codec did you compress with and which player are you trying to use?