Difference between Sub-channel data?

[ifvrt12]

Hi there.
Does anyone know what the difference is between these two types of sub-channel data?



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

Thanks in advance.

[Reef]

Interesting question, I also would like to know the answer.

[DevX]

Compact Disc subcode - Wikipedia, the free encyclopedia

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]

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]

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.

[DevX]

Since 2002 Securom does not use subchannels anymore and dumping it is only waste of disc space.

[ifvrt12]

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 (). But i think this is irrelevant to the topic.

[ifvrt12]

Anyway, thanks for the answers. I got what i needed.