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Eliminates the watermarks in DVD-A, Once the file have decrypted
enri1755
post Feb 28 2006, 15:22
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Hello everybody:
Today, there's no trouble in the extraction of the stereo files from a DVD-A to make a copy -personal copy-.
But my question is another ones. A friend of me likes make an authoring with the files (he have ripped) in stereo format 24/96.
Well, I say to help, and make the first essai. The DVD Universal Denon 1920 shows the natural "Copyright Lock". That means, the watermarks still inside the files. There's anyway to eliminates the watermarks once you have make the extraction of the files or do you must to return to extraction with the command -w on the original DVD-A?

I hope somebody can to answer this "rare" question.

Thanks a lot in advance.

1755 sad.gif
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keytotime
post Feb 28 2006, 15:43
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I believe your post is a TOS viloation.
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Fandango
post Feb 28 2006, 16:24
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Welcome enri1755 at HA, you're request is not welcome here.

You don't want to the owners of this forum to get into trouble, do you?
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NumLOCK
post Feb 28 2006, 16:38
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Indeed.. depending on the country, breaking a watermark scheme may be illegal, sometimes even in the academic context, unfortunately...

If I recall correctly, the researchers who originally studied the DVD-Audio watermark scheme, went into all kind of trouble when trying to publish their findings (or even talk about them in a conference, etc)..

If you have an academic interest in watermarking schemes (and breaking them), you may have better luck in a cryptography mailing-list or such.

Now of course, the discussion of "how to remove a watermark without audibly damaging the audio" may be a mix between cryptography and psychoacoustic subjects.

I think saying anything more subtle than "try to add some noise" could break some laws and bring trouble to some people. What about common audio processing tools, then ? Should they be illegal because they could help removing a watermark ?

This post has been edited by NumLOCK: Feb 28 2006, 16:42


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.halverhahn
post Feb 28 2006, 18:59
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Just author a DVD-Video, with a dummy Video and the 24/96 stereo Audio.


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NumLOCK
post Feb 28 2006, 22:08
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QUOTE (.halverhahn @ Feb 28 2006, 06:59 PM)
Just author a DVD-Video, with a dummy Video and the 24/96 stereo Audio.
*

You mean, the players would accept playing back watermarked audio, even when it's stored on DVD-R ?

What a stupid copy protection policy laugh.gif


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gameplaya15143
post Mar 1 2006, 03:32
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QUOTE (NumLOCK @ Feb 28 2006, 04:08 PM)
QUOTE (.halverhahn @ Feb 28 2006, 06:59 PM)
Just author a DVD-Video, with a dummy Video and the 24/96 stereo Audio.
*

You mean, the players would accept playing back watermarked audio, even when it's stored on DVD-R ?

What a stupid copy protection policy laugh.gif
*


I thought dvd audio was only 48khz.

the way I see it.. if it's not effective, it's not really copy protection.. it's a defect mad.gif (actually i would consider it to be a defect anyways laugh.gif )


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daybreaker
post Mar 1 2006, 03:56
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I don't think you could just add dummy video. DVD-A is not DVD, which is why most DVD players do not play DVD-Audio.
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.halverhahn
post Mar 1 2006, 14:36
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QUOTE (NumLOCK @ Feb 28 2006, 11:08 PM)
QUOTE (.halverhahn @ Feb 28 2006, 06:59 PM)
Just author a DVD-Video, with a dummy Video and the 24/96 stereo Audio.
*

You mean, the players would accept playing back watermarked audio, even when it's stored on DVD-R ?

What a stupid copy protection policy laugh.gif
*


Yes! yeahright.gif
Watermarking is not specified in DVD-V, so nobody will check for it.
Take a look at http://forum.doom9.org/showthread.php?p=691092#post691092


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