As I try to make some testresult on a bunch of different DVD±R media, I need to know a bit more about the end result/scores, and how to interperet it. I have tried to search around after some standards, but it has not been conclusive, so I ask here:

Can someone please fill in the blanks or correct the ones that are there;

Description--------minimum----Average/standard/normal-------Maximum

PI Average-------------0---------------------?---------------------280
PI MAX-----------------0---------------------?--------------------1456
PO Failures-------------0---------------------?------------------------?
PIF Average------------0---------------------?------------------------?
PIF MAX----------------0---------------------?----------------------32
Jitter Average-----------?---------------------?----------------------15
Jitter MAX---------------?--------------------?---------------------100


Hope you understand what I'm askin for ... The descriptions over is from Nero DVD Speed.....


Best regards
PK

The professional industry standard is the following:

PIE MAX - 280
PIF MAX - 4
PO Failures - 0
Jitter MAX - 12%

The problem is that every drive looks at discs differently, so it is impossible to precisely guage error values. For instance:

Person 'A' has a LiteON 832s and scans DVD-R 'X' and gets the following results:

PIE MAX - 200
PIE AVG - 10.24
PIF MAX - 3
PIF AVG - 0.04

Now Person 'B' also has a LiteON 832s and scans the same DVD-R 'X' and gets these results:

PIE MAX - 320
PIE AVG - 14.97
PIF MAX - 7
PIF AVG - 0.23

So which result is correct? Neither.
Is the disc good or bad? We don't know.

So what can you do to figure out your discs quality??? Well, it's not as clear cut as a simple scan I can tell you that! I would suggest using a transfer rate test to see how well the disc performs while being read at high speeds. Personally, I think 12x is the perfect speed for these tests, but 16x is ok as well (8x would be the bare minimum!). Also, trying the disc out in your own DVD Players, or a friends to get an idea of how the errors reported on your scans are reflected in real life results, can be quite the learning experience. You may find that even when your drive shows a PIE Max of 400 or 500 that the disc still works perfectly in everything you play it in. Then again, you may find you have a drive that will scan unplayable discs and report less then a 100 unit PIE Maximum value.

What I like to do, is keep a spread sheet of my own test results and performance results. I test every disc I burn, and keep everything recorded (date of burn, recording speed, drive burned on, firmware used, etc...). That way I can keep track of what sort of problems affect playability, and look for them on my scans.

Of course, most people aren't quite as nuts about recordable media as me (but many of the people who ARE can probably be found on this forum!!)

(in reply to Keiko)