Burn speed analysis questions. (with pictures)

I've recently benn aquiring and burning all the different types of media that I can get my hands on. Then I do a scan with Nero's DVD speed to determin how my burns come out. I'm just having trouble reading the scans to determin what is the best speed for me to burn. So, anyone that would like to give me some input feel free.

I use a Sony DRU-800A (Rebadged Lite-On 1693S) writer with the most recent Sony firmware KY06.

My tests were performed on Verbatim DataLifePlus 8X DVD+Rs. I'm not sure if it matters but the DVDs are white inkjet hub pritables.

I burned 2 different discs at 2 different speeds, 6X and 8X (Those are the only speeds Nero allows me to burn at with this media.) and I peformed 8X and 4X scans on them for 2 different quality reads

Here is the 8X burn with an 8X quality scan and a 4X quality scan.







Here is the DVD burned at 6X with the different quality scans of 8X and 4X





What can be determined from these pictures? Both DVDs scored 95 their quality scans. I heard that PI falures are what to look at and not PI errors but all four scans have very many errors so how can they not matter? PI failures almost doubled in some scans but the score was still 95 all around, so should the score have been 90 if there were twice the ammount of failures? Also with the different scan speeds I noticed that the green line arcs in the 8X scans but remails strait across the horizon in 4X scans. Is it better to have short blue lines like in the 6X burn 4X read or long blue lines as in 8X burn with 4X scan? Basically which DVD burned better and why? I'd like to fianlly understand this. Sorry if its a lot of questions, but its been bothering me for some time now and I know that each person's burner will scan differenly than others' so it wouldnt make sense to base my disc maufacturer and burn speed preference off of someone elses scans.

Thanks in advance, Josh

 

PIE: parity inner code errors
PIF: parity inner code fail (1st level error correction failure)
POF: parity outer code - fail; (uncorrectable errors).
APIE: average PIE, measured over the whole disc

I read the help file from DVDInfo Pro... I use bother Nero CD/DVD speed test and also DVDInfo Pro quality scan test... and this is what I came to understand......

the PIF is the thing to look for... you are correct and if you get a POF that's really bad! The quality scores count.

Your PI Failures are much less than 280 which is great and you have no PO Failures... so that's good! just trust your quality scores. but as far as the 8X speed tests or the 4X speed tests I don't know what to make of that or why they even have those speeds to test at. Both tests show the same quality score. so that's that! here are some of my scans:

 

Ahh thank you IHoe and Binkie. I'll have to checkout DVDinfoPro also and see what I score. I havent found any media yet that score less than 90 or have large ammounts of PIF, even CMC mags that are a few months old. I guess, like you said, as long as it plays and can be re-ripped its all good. Thanks again, your advice (both of you) is always appreciated.

 

Help! I have a Plextor 420A that came with NERO Suite. I can't use the Disc Quality function. When I click start, I get a "failure to initialize" message. Any ideas?

 

Thanks for the quick response!