Just how close are dvdinfo scans between drives? A comparison! (Full Version)

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KenW -> Just how close are dvdinfo scans between drives? A comparison! (8/4/2004 6:07:54 PM)

Some people may wonder how close dvdinfo scans on new 3.xx software compared to other scanback packages. Well I did some testing and I will post 3 scans all 3 scan are of the same disk, this disk has 3gb of video on it and was burned using nero 6.3.1.17. on my new benQ 1600 fw B5G9, then scanned for pie/pif and jitter on nu tech, benQ , and for pie/pif on liteon 832.

As you will see the level are all within 5% or less...not bad if you take into account that no drive will ever scan the same as another and, at least in theory, no two scans on scan drive will be identical.

Nu tech 082 fw B375
[image]local://upfiles/17370/9DD0411BB27043EEBB3DA7AB2056CCCE.jpg[/image]

Incidentally, pay close attention to the fact that the scans are resulting in level 2 spikes in almost EXACTLY the same locations...very interesting!




KenW -> RE: how close are dvdinfo scan between drives (8/4/2004 6:09:09 PM)

BenQ 1600a fw B5G9
[image]local://upfiles/17370/14F16A8A762644029DB0A980F6F38356.jpg[/image]




KenW -> RE: how close are dvdinfo scan between drives (8/4/2004 6:10:42 PM)

Liteon 832 fw VS0A

[image]local://upfiles/17370/D676F09602284EFEA205436D74AD024B.jpg[/image]




KenW -> RE: how close are dvdinfo scan between drives (8/4/2004 6:13:39 PM)

just so no one can say but wait he didnt show use a kprobe of the disk so we can see how close kprobe is to dvdinfo3.xx well here is kprobe 2.2.3 on disk from above.

Liteon 832 fw VS0A kprobe scan

[image]local://upfiles/17370/E6C924A904CE450BBA9BB610F2065857.jpg[/image]




zebra -> RE: how close are dvdinfo scan between drives (8/4/2004 6:24:13 PM)

Well, I must say...I am impressed. This is quite a nice summation indeed. Good work ken for highlighting this and proving some very valuable points!




nicw -> RE: how close are dvdinfo scan between drives (8/4/2004 6:29:36 PM)

Well, I am speechless. Excellent work Ken and excellent scans. Thanks very much for having the thought to do this and for posting your results I appreciate it, as I am sure others do too.




KenW -> RE: how close are dvdinfo scan between drives (8/4/2004 6:30:08 PM)

First I should comment that the level on these scans are amazingly low, for example the pie level is under 5 in all cases on first 3 scans also notice the number of pif errors is very low and level is under 2.5 It should also be noted that the jitter on the two scans with jitter is 10% or lower. and around 8% part of the time 8% jitter is seen as the magic level, the I'm a god like scan level.

standard values

pie 280 or less
pif 4 or less
jitter 15% or less.




KenW -> RE: Just how close are dvdinfo scans between drives? A comparison! (8/4/2004 6:56:18 PM)

just so no scanning program is left out here is the same disk scanned on nu tech 082 using nero speed3 the latest verion.

[image]local://upfiles/17370/F36840FE3CE4419591D26FC2CB49AE73.png[/image]




emperor -> RE: Just how close are dvdinfo scans between drives? A comparison! (8/4/2004 7:16:23 PM)

Very interesting post KenW, keep them coming...




Jamos -> RE: Just how close are dvdinfo scans between drives? A comparison! (9/20/2004 7:08:28 PM)

Hmm I seem to get the opposite scans are off between the two. My Kprobe and CDspeed scans show way more PIE(PI) than DVDInfo pro does using the same drive liteon 832 and disk. I will post kprobe results next. Could this be a bug in using a firewire interface with DVDinfopro?

Dvdinfo pro scan 4x.

[image]local://upfiles/18346/B9413E43EA1C412B963A0CBBB8D09F6B.jpg[/image]




Jamos -> RE: Just how close are dvdinfo scans between drives? A comparison! (9/20/2004 7:35:14 PM)

This is the kprobe scan. The PIFs are about the same but the PIE (PI) seem to be about 3 times as much. I get almost identical scan with cdspeed3 as this one. My nu 082 scan is way different than any of these, not sure if I can rely on that drive.

[image]local://upfiles/18346/575D065F0993446491C98E49F0F617FE.png[/image]




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