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ifvrt12
26.11.2010, 18:58
Hi there.
Does anyone know what the difference is between these two types of sub-channel data?

http://img254.imageshack.us/img254/2650/61099823.png

And which one is the best for different copy protections? Latest SecuRom or StarForce, for example?

Thanks in advance.

Reef
26.11.2010, 22:55
Interesting question, I also would like to know the answer.

Development
27.11.2010, 00:09
Compact Disc subcode - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Compact_Disc_subcode)

Full 96 bytes of subchannel data rarely contain any valuable data and were used mostly on karaoke (CD+G) discs only.
In most other cases (eg old Securom) 16 bytes are enough to dump (this means P and Q channels only).

ifvrt12
27.11.2010, 18:12
Full 96 bytes of subchannel data rarely contain any valuable data and were used mostly on karaoke (CD+G) discs only.Does it mean, that 16 bytes is better to use even with the newest SecuRom?
What about cases where you're not sure? Is it more "fail-proof" to gather 96 bytes of subchannel data?

I mean collection "more" subchannel data would not harm, and the dics would be emulated just as good as with 16 bytes of subchannel data?

Terramex
27.11.2010, 19:26
Just stick at the standard New SecuROM (and regarding your first post Starforce) profile settings.
Subchannel "data" won't harm, but for CDs with those protections you don't need it anyway.

Development
27.11.2010, 19:55
Since 2002 Securom does not use subchannels anymore and dumping it is only waste of disc space.

ifvrt12
29.11.2010, 22:20
Thanks for your help, Development.
Is there any way to determine if there's some relevant/usefull subchannel data on the compact disc?



Since 2002 Securom does not use subchannels anymore and dumping it is only waste of disc space.If i remember right, i had some games where i had to use subchannel data, otherwise it wouldn't recognize the disc. I think the securom was a little older than 2002 :)
I cant check which games it was, i've thrown many of them away (:D). But i think this is irrelevant to the topic.

ifvrt12
01.12.2010, 13:01
Anyway, thanks for the answers. I got what i needed.