PDA

View Full Version : New anti-ARccOS plugin for PgcEdit

blutach
14th October 2005, 06:10
See here (http://forum.digital-digest.com/showthread.php?t=56078).

Excuse the X-post, but it is relevant for each forum, IMHO.

Regards
jeanl
14th October 2005, 08:08
Very interesting! Quite a smart way to go about doing it, if I understand correctly, the plugin finds which cells are unreferenced and as such will never be played... These are prime candidates for arccos protection... Pretty smart... Too bad the sectors can't be retrieved directly from PgcEdit (I guess you need the absolute disc sector, not sectors referenced to the beginning of the VOB). I think it should still be possible to retrive that info from the IFO files (since that's exactly how a player does it) using the VTS sectors stored there...
jeanl
blutach
14th October 2005, 08:11
You can retreive them jean. Trace through the title and see where the IFO takes you - you can then see that cells numbered xx-yy are the ARccOS cells, mark them accordingly and create the PSL2. It is not a real sophisticated protection.

Regards
jeanl
14th October 2005, 08:15
Yes, but finding the true cell sector (relative to the start of the disc, not the start of the VOB) requires more work. Currently, the plugin relies on the log from decrypter, or on another app. I'm just saying that I think all the info is in the IFOs...
Jeanl
blutach
14th October 2005, 09:45
Finding the starting LBA is not a problem mon ami. DVD Decrypter tells you that for each VTS. And there's a couple of new little utils around (cellsLBA for example) which says it all.

Regards
r0lZ
14th October 2005, 11:08
No, the absolute sector numbers cannot be retrieved from the IFOs only, as the starting point of the DVD files (start of VIDEO_TS.IFO) may be different for each DVD, and is not hardcoded in the IFOs.
It should be possible to retrieve it from the original disc (or from a 1:1 ISO copy, but that's difficult to do since the DVD is protected by a read error), but not from the ripped files. Anyway, having to provide the DVDD log file to retrieve the absolute sector numbers is easy enough. IMO, this plugin is well done.
jeanl
14th October 2005, 17:06
Ah OK, I understand... I didn't realize that the fisrt IFO was not on the first disc sector... That makes sense. Yes, the plugin is pretty smart...
jeanl