Saturday, July 31, 2010

Decryption section outdated

DVD-Audio's copy protection was overcome in 2005[6] by tools which allow data to be decrypted or converted to 6 channel .WAV files without going through lossy digital-to-analogue conversion. Previously that conversion had required expensive equipment to retain all 6 channels of audio rather than having it downmixed to stereo. In the digital method, the decryption is done by a commercial software player which has been patched to allow access to the unprotected audio. As the DVD-A format has not gained wide commercial interest or acceptance, decryption tools are still very primitive.
Above is outdated. Since about a month, an open source decrypter "libdvdcpxm" was released on one of the popular video forums. It can remove CPRM/CPPM from AOBs and VOBs (without the need of windvd). EVODemux can demux the mlp/lpcm stream from AOBs. There are still no free tools to convert raw mlp streams though. It's also not possible yet to remove those watermarks. 83.81.217.2022:41, 27 July 2007 (UTC)
In 2007 the encryption scheme was overcome with a tool called ''dvdcpxm''.
dvdcpxm was released to the public on doom9's forum: http://forum.doom9.org/showthread.php?p=1013597#post1013597 (in June 2007). It was posted by a member called mommyman. I'm not sure whether he's the author of the decrypter though. But, it is the same guy who updated DVD-A Explorer. 83.85.221.196 (talk) 19:13, 22 October 2008 (UTC)
Now there exist a DVD-Audio plugin for foobar2000, released on 2009/07/03, and a freeware dedicated DVD-Audio player, named ShaPLAY, released some months ago. KSM-2501ZX, IP address:= 201.69.132.114 (talk) 17:46, 8 July 2009 (UTC)

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