how do i prevent my dvd from being copied

[Dv8ted2]

Got this far in the tread it seems evident that protection on burned dvd is possible.

Acording to my isobuster dump on prot_dvd all vob files are zero bytes long, and a file that is zero byte long can't be copied.

Copy the files to the hard disk is not working, you can't copy empty files.

This apears to be an effective way to prevent file copy.

How do you make a file zero byte long on dvd?

Empty or Zero 0 Bytes shown on CD DVD
Sometimes a CD-RW or DVD-RW disk will only show as being empty or Zero 0 bytes capacity. No Files or folder shown even though you can see the burn marks on the disk. We can recover your Video, Photos and Data Files from such Disks.

http://apextechnology.co.uk/data-recovery-cd-dvd-floppy-photos-files-uk.asp

You need to take your fingers out of your ears. Nothing is infallible. I have software that can copy just about anything. It can recover data from severely mangled file systems.

[Nilfennasion]

Jesus H., and so on.

Yes, protection on any DVD is possible. But as everyone here and their dog has tried to explain to you in more ways than I can count, defeating that protection has proven not only possible, but piss easy.

Even if ISOBuster mistakes your VOB files for being zero bytes in length, that does not mean every other ripping program that comes into existence will make the same mistake. And if they really were empty files, your disc would be a coaster.

To echo Dv8ted2, if there are programs that can recover files from severely mangled file systems, you have two chances of preventing a concerted user from doing the same with your DVD. None, and fukk all.

[ilovevcd]

Dv8ted2 wrote
"Nothing is infallible. I have software that can copy just about anything."

I know that 100% protection is inpossible, and Hollywood knows that too.
But they use it anyway, just to stop as many as possible even, even risking the compability.

And i have the same goal.


Nilfennasion wrote
"Even if ISOBuster mistakes your VOB files for being zero bytes in length,"

If you create a file on your harddisk that is empty, the properties says 0bytes. Or has the computer misstaken the filesize too.


All copy and ripping software i tried have not been able to crack the prot_dvd

[Nilfennasion]

Again, if the file is playable, it has to contain data. There is no way around it.

Now, I have to ask because this has been bugging me for a long time, but are you a Scientologist? Because seriously, you sound like one with the way you ignore the facts that are being told to you and invent your own.

[ilovevcd]

Again, if the file is playable, it has to contain data. There is no way around it..

DVD is sectorbased so filesize does not matter.

[Dv8ted2]

Again, if the file is playable, it has to contain data. There is no way around it..

DVD is sectorbased so filesize does not matter.

There is still an underlying filesystem, so filesize should matter.

[ilovevcd]

There is still an underlying filesystem, so filesize shoud matter.

A sector based player don't use the filesystem to play the disc.
But the filesystem is required to burn the data to the disc.

[Dv8ted2]

There is still an underlying filesystem, so filesize shoud matter.

A sector based player don't use the filesystem to play the disc.
But the filesystem is required to burn the data to the disc.

You keep living in a dreamworld. I am grounded in reality. A filesystem is needed to play the files as well, or it would not know which files to play.

[ilovevcd]

On the computer you can access any part of the harddisk by telling the disc-controller to jump to
LBA 2000, then you can read the data in that sector.

In the same way you can tell the dvd-player to jump to LBA 295, then you can read the data in that sector and play it.

This is sector based playback.

[videobread]

ilovevcd: Your on the right track. Just keep posting your findings and ignore the nay-sayers. Some of us are listening. Nay-sayers only stifle the free flow of ideas and are not teachable.

[Dv8ted2]

On the computer you can access any part of the harddisk by telling the disc-controller to jump to
LBA 2000, then you can read the data in that sector.

In the same way you can tell the dvd-player to jump to LBA 295, then you can read the data in that sector and play it.

This is sector based playback.

You are describing a data dvd. This is radically different from a video dvd.

[Dv8ted2]

ilovevcd: Your on the right track. Just keep posting your findings and ignore the nay-sayers. Some of us are listening. Nay-sayers only stifle the free flow of ideas and are not teachable.

We are more realistic and know that sticking your fingers in your ears does not work. What you fail to realize is that the data must be decrypted on the other end for it to be playable. This has to occur or you have produced something that noone will want.

[ilovevcd]

The only way to tell a DVD-ROM where to go is throug the LBA adressing.

And this has absolutly nothing to do with if the disc is dvd-video or dvd-data.

This has to do with the DVD-ROM standard

[ilovevcd]

Nilfennasion wrote
"Again, if the file is playable, it has to contain data. There is no way around it."


No, the harddisc-controller can access the harddisk whitout any sort of filesystem, BUT no filesystem can access the hard-disc without a disc-controller.

So if you access a disc or dvd this way, you can throw the filesystem down the toilet.

Just tell the controller to go a certain sector, interpret the data yourself.

[Dv8ted2]

Nilfennasion wrote
"Again, if the file is playable, it has to contain data. There is no way around it."


No, the harddisc-controller can access the harddisk whitout any sort of filesystem, BUT no filesystem can access the hard-disc without a disc-controller.

So if you access a disc or dvd this way, you can throw the filesystem down the toilet.

Just tell the controller to go a certain sector, interpret the data yourself.

Hogwash - Without an operating system, all you have is hardware that does nothing. Within each operating system lies a filing system. The filing system is used regardless.

[ilovevcd]

As the DVD standard uses 3 different filesystems

ISO-9660, UDF 1.0.2 AND IFO

There is some jobs to be done, telling the ISO and UDF filesystem the our VTS_01_1.VOB is zero bytes long.

The third one, IFO is much more difficult (not impossible) to change. Many comercial copy protection does it.
And the IFO files tells the player where all files is on the disc, so it can not be tempted with unless you now what you are doing.

[Dv8ted2]

As the DVD standard uses 3 different filesystems

ISO-9660, UDF 1.0.2 AND IFO

There is some jobs to be done, telling the ISO and UDF filesystem the our VTS_01_1.VOB is zero bytes long.

The third one, IFO is much more difficult (not impossible) to change. Many comercial copy protection does it.
And the IFO files tells the player where all files is on the disc, so it can not be tempted with unless you now what you are doing.

You are not to be taken seriously, because you do not have a proper understanding of how computers work. :P

[Noahtuck]

As the DVD standard uses 3 different filesystems

ISO-9660, UDF 1.0.2 AND IFO

There is some jobs to be done, telling the ISO and UDF filesystem the our VTS_01_1.VOB is zero bytes long.

The third one, IFO is much more difficult (not impossible) to change. Many comercial copy protection does it.
And the IFO files tells the player where all files is on the disc, so it can not be tempted with unless you now what you are doing.

You are not to be taken seriously, because you do not have a proper understanding of how computers work. :P

Why ?? Someone has been
Oh wait..... Well..... nevermind, back to my original statement 8)

[ilovevcd]

You are not to be taken seriously, because you do not have a proper understanding of how computers work. :P

In order to create a copy protection for DVD, you need to know the differences between a stand-alone player and a computer.

A dvd-video disc has a very restricted rules for the filenames as described in the dvd-spec.
Also the location of these files are critical, because the player access the disc directly at certain location
to read data, and if the order should be wrong, wrong data is obtained

The computer on the other hand handles with hugh amount of data from the user, with various names and also different length. It is here the filesystem become important, because the computer has no way to asume where my powerpoint presentation is located.


If one don't understand this difference, the idea of copyprotection fails and become impossible

[Dv8ted2]

You are not to be taken seriously, because you do not have a proper understanding of how computers work. :P

In order to create a copy protection for DVD, you need to know the differences between a stand-alone player and a computer.

A dvd-video disc has a very restricted rules for the filenames as described in the dvd-spec.
Also the location of these files are critical, because the player access the disc directly at certain location
to read data, and if the order should be wrong, wrong data is obtained

The computer on the other hand handles with hugh amount of data from the user, with various names and also different length. It is here the filesystem become important, because the computer has no way to asume where my powerpoint presentation is located.


If one don't understand this difference, the idea of copyprotection fails and become impossible

You completely missed my point. My teasing comment was directed towards saying that a disc controller could do it's job without a file system. They work in conjunction. You could have one without the other, but the filing system organizes the files for you.

You also missed the part that data recovery software could bypass whatever protection you use. To protect yourself, you would have to do away with all software and computers. That seems like a very tall hill to climb.

This topic is starting to bore me so I will finally bow out.

[Nilfennasion]

This topic is starting to bore me so I will finally bow out. sulkoff.gif

Me too. I do not believe I can accomplish anything here, so why bother...

[ilovevcd]

Have fixed so filesize is zero in both UDF and ISO

Have also stopped pretty much else exept disc-copy

[ilovevcd]

Now almost there, only disc-copy remain

[guns1inger]

Does it play in a range of stand-alone DVD players ?

[ilovevcd]

Does it play in a range of stand-alone DVD players ?

Yeep but not on computers (on purpouse)

[Midzuki]

Don't forget to remove the DVD-logo from the surface of
your "copy-proof" disks (seriously).

[MEL15]

Why would you want to do that.

[FulciLives]

Does it play in a range of stand-alone DVD players ?

Yeep but not on computers (on purpouse)

Don't forget to remove the DVD-logo from the surface of
your "copy-proof" disks (seriously).

Because you aren't making a DVD Video compliant disc anymore.

Look at a Disney DVD Video. It does not have the standard DVD Video logo on it. Instead is says something like, "Disney DVD" on it. Why? They can't use the logo as it is out-of-spec. So they made up their own "Disney DVD" logo. Losers.

- John "FulciLives" Coleman

[guns1inger]

Does it play in a range of stand-alone DVD players ?

Yeep but not on computers (on purpouse)

So what you have is a deliberately corrupted data disc, not a DVD Video disc. Nice intellectual exercise, but not a realistic or practical copy protection system.

[ilovevcd]

Don't forget to remove the DVD-logo from the surface of
your "copy-proof" disks .

I'm aware of that, and as you say it is no longer a DVD-complient disc