Kunsten å kopiere DVD-filmer

[Howard]

Kunsten å kopiere DVD-filmer

Kopiering av DVD-plater er noe som har vært et hett tema helt siden DVD-platene kom på markedet. Saken rundt DVD-Jon og DeCSS har vært kraftig omtalt i media og nå som DVD-brennere virkelig begynner å bli utbredt er temaet hetere enn noensinne. Vi har testet programmet DVD X Copy.

 

Les testen her.

[Shrike]

åååå... "DVD-JON" Kan ikke folk fatte hva han egentlig har gjordt før de gir han denne "tittelen".

 

Gammal sak, men virker som de færreste har lest den:

 

Some common unknown truth about DeCSS

 

 

So, you heard about Jon Johansen, the Creator of DeCSS? A brave soul,

which only intent was to help the linux community playing DVDs? And

you know, that the sole reason why he released only a windows version

of DeCSS was that Linux didn't supported DVD (or UDF) at that time?

 

If you believe this (like most people unfortunately), you are wrong.

Jon Johansen is not the hero for open source software as he likes to

describe himself lately.

 

The truth is, he is a liar, a defender of closed source software,

ignorant to the GPL and a guy who simply wanted to copy DVDs. His

lies lead most of us to believe that he is a good guy and got him

even free a legal team paid by EFF. So you should not wonder that this

guy won't tell you the truth, so i have to.

 

Some words about me: I was familiar with the development of DVD

playback under linux very much from the beginning. I got all the

events live, i wrote source for nearly every DVD-related linux

project (including LiVid and the dxr2 driver). I simply know what

i'm talking about, because i was involved. But because i'm afraid

of flames i won't tell you my name. But i will cite emails

supporting my claims.

 

 

 

In the beginning of DVD on linux we had nothing. CSS involves two

steps. First you need to authenticate yourself to the drive, and the

drive needs to authenticate to you. Unless you do this, you won't

even get the encrypted data from the disc. And then you have to

decode the data using the key.

 

Derek Fawcus finally released source for the authentication issue.

We were able to read the -encrypted- data from the disc. This wasn't

really helpful, but a first step. Derek released his code under the

GPL.

 

This code was running under linux, we were actually able to read data

from DVDs. So much for the lie about the missing linux support for DVDs

at that time. UDF support was already there, but you even won't need UDF

for reading DVDs, as DVDs contain a ISO9660 compatible filesystem as well.

 

Later DoD released their DVD speedripper, a full CSS decoder running under

windows. Shortly after DeCSS was published. Jon Johansen himself announced

DeCSS on the LiVid-Mailinglist:

 

From: "Jon Johansen" <[email protected]>

Subject: [Livid-dev] DeCSS 1.1b has been released

Date: Wed, 6 Oct 1999 06:45:39 +0200

 

DeCSS is a css decryptor which works with 'the Matrix',

something DoD's speed ripper doesn't.

 

 

Derek got his hands on the source, and announced this interesting information:

 

From: Derek Fawcus <[email protected]>

Subject: Re: [Livid-dev] DeCSS 1.1b has been released

Date: Wed, 6 Oct 1999 19:49:25 +0100

 

I've just read through the source to DeCSS, compare CSSauth.cpp to

css-auth.c in my authentication package.

 

The authors have taken it almost verbatim - all they did was remove

my copyright header, one block comment, and rename the functions.

I don't mind them using the code - it's out there, but they could have

left my name on it.

 

Interesting this - I only released that file under GPL!

 

 

So, DeCSS was a clear break of GPL! So much for a guy who got his legal

defense paid by the EFF because he wanted to support Linux...

 

This incident got the linux dvd people of course upset on Jon Johansen.

He was emailed and informed that under the GPL he is obligated to release

the source code too. He simply refused that in his response and stated

that linux was a bad os and he wishes it would had never been released(!).

So much for a guy who pretends to be a linux supporter.

 

Date: Thu, 7 Oct 1999 23:36:03 +0200

From: "Jon Johansen" <[email protected]>

Subject: Re: [Livid-dev] DeCSS 1.1b has been released

 

> And: The Open Source model does not work on a "give me that and i

> will give you this" model. You should maybe first find out, what

> the meaning of GPL and the open source idea is, before talking to

> me in such a rude way. If Linus Torvalds has speaked in a way like

> you, Linux wouldn't even exist today.

 

And about linux and Linus Torvald, I wish that would have happened.

FreeBSD is a far superior OS compared to linux.

 

Jon Johansen later tried to play down this mail:

 

From: "Jon Johansen" <[email protected]>

Subject: [Livid-dev] I am sorry...

Date: Fri, 8 Oct 1999 02:33:57 +0200

 

And I might have overdone it a bit when I said I didn't care if linux

would not have been invented. It's a great OS, but of course not in all

ways, but that's how it is with all operating systems.

 

PS: If I could just get some hollywood plus drivers for linux, I would

probably be setting up my own linux machine in the living room

 

So this great supporter of linux, who told you that he didn't released

for linux sole for technical reasons (which were proven untrue above)

didn't even had a machine running linux!

 

Jon Johansen sent some other mails to the LiVid-Mailinglist showing his

true attitude toward free software and the GPL:

 

From: "Jon Johansen" <[email protected]>

Subject: Re: [Livid-dev] DeCSS 1.1b has been released

Date: Thu, 7 Oct 1999 20:21:53 +0200

 

In case you didn't know, WE had already sent the css decryption source

to our connection in the linux community. So why don't you just shut up?

That means we have shared with the once who shared with us. You didn't

get anything; shouldn't be too hard to figure out why....

 

So Jon redeclared the GPL. You aren't obligated to publish your

modification in the public, you just give them to the original author.

And if you are not nice to him (and give him something), you get nothing.

Nice try.

 

From: "Jon Johansen" <[email protected]>

Subject: Re: [Livid-dev] DeCSS 1.1b has been released

Date: Thu, 7 Oct 1999 23:36:03 +0200

 

We would never release the source to everyone. It has been released to

Derek who knows how to handle it, and when to release which parts of it.

I trust him, and I am sure he will release what's needed, at the most

convenient point. If you have trouble with that, then go reverse engineer

css yourself.

 

Oh, this guy really wanted to help the linux community? How? Releasing

binary only module for CSS decoding? Or how should the linux community

use his CSS hack without the source?

 

 

That we finally got the DeCSS source despite his plans to not release

it, was the result of Jons own mistakes. He left a copy of the source

code public available on his webserver.

 

 

From: Ted Milker <[email protected]>

Subject: [Livid-dev] DeCSS source

Date: Thu, 07 Oct 1999 18:35:44 -0500

 

The DeCSS source code is available on the DeCSS homepage at:

 

http://mmadb.no/hwplus/____MMSystem_275____/Decss.zip

 

 

After this posting Jon fast removed the source code, but i have downloaded

it from there (Ted informed me in IRC before he posted this), it was

there. And it contained the GPL code claimed above, with the copyright

removed. So DeCSS was a clear violation of GPL.

 

Finally the DeCSS source was released after this, because there were no

other options left (the source had already leaked, and the GPL required

it).

 

I hope after reading this summary of authentic emails and my firsthand

observations you rethink what you thought about Jon Johansen. He is

not the good guy he likes to describe himself (which helped get free

legal advise etc.).

 

He didn't wanted to support the Linux community, he has used GPL code

and broke the GPL himself and after all he has a very bad attitude.

 

I repeat: I don't think all the legal hassle to Jon regarding DeCSS is

good, but he is definitely not the matyr he was made by the public.

 

 

cryptus - 2000/11/27

[DesertGlow]

Dette er vel noe de fleste har lest, men det forandrer ikke på det faktum at han var titlat av Økokrim for denne saken (uavhengig av hva hans egentlige rolle var og ikke minst hans "helte-status") og at de fleste vet hvem "DVD-Jon" er.

[Anders Leipsland]

Fra testen

 

DVD X Copy var det første kommersielle programmet som gav deg mulighet til å ta en kopi av dobbeltsidige DVD-filmer ved hjelp av en DVD-brenner.

 

Sikker på at dere ikke mener 2 lags DVDer og ikke dobbeltsidige?

 

dobbeltsidige vil jo bare si at det er data på begge sidene av disken, altså at det er en såkalt flipper.

 

2 lags / dual-layer er jo når det er 2 lag med data (tilsammen 9GB) på en side av disken.

[Anders Leipsland]

doh, ble endel stygge skrivefeil der, men får jo ikke redigert innlegget

[MDCCLXXVI]

Skal du på TG i år anders?

[DesertGlow]

Fra testen

 

DVD X Copy var det første kommersielle programmet som gav deg mulighet til å ta en kopi av dobbeltsidige DVD-filmer ved hjelp av en DVD-brenner.

 

Sikker på at dere ikke mener 2 lags DVDer og ikke dobbeltsidige?

 

dobbeltsidige vil jo bare si at det er data på begge sidene av disken, altså at det er en såkalt flipper.

 

2 lags / dual-layer er jo når det er 2 lag med data (tilsammen 9GB) på en side av disken.

 

En liten skrivefeil her ja. Skal rette opp dette ASAP. (blitt vandt å si at DVD-plater har fire sider...)

[magnusr]

Et annet program som heter DVD2One er mye mer intressangt.

 

Det lar deg rippe en dvd på 15-20 minutter ned på 1 dvd-r plate. Du kan velge alle lyd filene og tekstene du måtte ønske. Du kan ta med ac3 lydfiler også. Ingen problem. Programmet har grafisk interface så selv bestemor kunne ha brukt det.

 

Programmet er 94kb stort og koster bare 39,99 Euro.

 

Har tatt backup av flere av dvdene mine de siste dagene uten noe tull. Fungerer topp med både subtitles og ac3/dts lyd. Billedkvaliteten er helt topp.

 

Alle platene den lager blir 4,36GB.

 

Kan laste ned en test på http://www.dvd2one.com Men testen er begrensa til 30 minutt.

[Lch]

[...]

 

Vennligst skriv en detaljert, men ikke for teknisk artikkel om dette og lever sporenstreks til samtlige norske medier. Ingen av dem ser ut til å ha fått med seg hva som faktisk har skjedd. CC gjerne til Økokrim.

 

Du har mitt sverd.

[Shrike]

[...]

 

Vennligst skriv en detaljert, men ikke for teknisk artikkel om dette og lever sporenstreks til samtlige norske medier. Ingen av dem ser ut til å ha fått med seg hva som faktisk har skjedd. CC gjerne til Økokrim.

 

Du har mitt sverd.

 

*fektemed*

[Lch]

Nåh, dummen.

 

Har du ikke sett LOTR:FOTR eller lest noen ridder/fantasy-bøker?

[Shrike]

høhø, joa =) 400'ende post forresten