To coin a phrase
: Nice review Ian! I read it with great interest because I have it's sibling 165P6s (without the superfluous Lightscribe).
Obviously LiteOn does something with its discs that BenQ doesn't like- at least regarding jitter and (as a result) PI/PIF. The transfer rates mostly look good. The relevance to real world compatibility issues, i.e. how other drives read these discs, has to be examined, though. LiteOn drives are traditionally excellent readers, and this one is no exception.
Ian wrote:Many times, I'll have a disc that tests fine on a Lite-On but experiences readability problems on other drives.
So does your experience indicate that a high jitter level (e.g. the jump at .85 GiB) on BenQ is a reliable indicator for problems on other drives?
I know that PI/PIF isn't the whole picture- you mentioned, e.g. the lead-in problem for DVD-R media with the presently available official firmware. Also I have some video DVD's burned on my old SOHW-1213S@1653S with impeccable scans that cause problems on my standalone player (Cyberhome CH DVD 462), particularly at the start
of the disc where PI/PIF are usually low. The Cyberhome normally swallows anything I give it and other players have no problems wirth these discs, so I don't know what exactly the problem is here.
Regarding Hypertuning: the newer LiteOn drives (e.g. my 165P6S) show a learning effect when they encounter new media types (independent of forcing hypertuning), so generally the second burn with a given media type is better than the first. I know you burn a lot more stuff than I do, so maybe this doesn't apply to your tests. I think this may have skewed some of my observations, though (which I'll post shortly in the Media forum).
Also there's a kind of "gotcha" in applying Hypertuning or Overspeeding with SmartBurn 3.1.6: you have to cycle the tray to apply the settings and actually do a burn for them to stick. There's a testversion 3.1.6t
available at the codeguys' site which applies the changes immediately. It can also activate "Online Hypertuning" which is LiteOn's experimental version of WOPC, only present in beta firmware at present.
I really find it ironic that so many drives can burn a DVD faster
than they can read it.
12x reading SL media is not "state of the art".
Is there a technical reason for the low DVD-RAM reading speed? It really limit the useful application of this type of media. I'm willing to invest some time to safely write a backup (for example), but when you need data from a backup, you need it bad and a low reading speed is frustrating.
Once again, thank you for your thourough tests!