Nero 7 creating it's own layerbreaks?

[arnie.d]

Hi,

I've burned a few DL dvds now. Before burning I use dvd-lab pro to set the layerbreak at the chapter I want. Then I burn the dvd files with nero and the layerbreak will be at the position I want it to be.
The latest disc I burned suddenly had 2 layerbreaks, one I created but the other just emerged. When I check the dvd files on my hard drive with ifoedit there's only the layerbreak, the one I made myself. On the dvd there's 2. How is this possible?

[jinjin_jp]

Is it mean 2_6 of below ?

http://forum.doom9.org/showthread.php?p=851894#post851894

[arnie.d]

Ok didn't understand what you meant by 2_6 until I saw the updated graph.

I think it is like no. 2_6

EDIT: only I have nero 7.2.0.3b instead of 7.2.3.2b.

So to prevent nero from adding a second layerbreak I should set a layerbreak over the half?

[r0lZ]

Never use Nero to burn a double layer DVD-Video! It is well known that it takes crazy decisions!

Burn with PgcEdit and ImgBurn. Note that, currently, you have to use PgcEdit to modify the IFOs. You cannot burn the files produced by DVD-Lab directly.

[arnie.d]

First I have to make an ISO? That's annoying and I can't add other files like dvd covers or info files. Anyway, I'll give it a try.

[r0lZ]

Yes, you have to make the ISO.
And, yes, you can add other files. Just put them in the root folder of the DVD (not in VIDEO_TS!), and launch the burn in PgcEdit. A confirmation dialog will pops up asking if you want to burn also the DVD-ROM files.
If it exists, the JACKET_P folder (containing the DVD cover images) is burned anyway, without confirmation.

[arnie.d]

OK. Thanks! :)

[arnie.d]

I tried to verify the disc I burned. ImgBurn says from start sectors are different but when I do a read test with dvdinfopro or nero cd/dvd speed the disc seems fine. Is the verify option of ImgBurn good?

[r0lZ]

I haven't encountered this problem yet. How did you burn the DVD? With PgcEdit/ImgBurn?

[arnie.d]

Yes. I followed the guide. But I made an image first then, then closed pgcedit and opened imgburn manually to burn the ISO.

EDIT: I think I know what could be wrong. I created two ISO files to test the program PgcEdit. One normal and one that splitses the ISO into chunks of 1 gb files. I think I burned the normal ISO, then deleted that file and used the other ISO files (the split ones) to verify the disc. Could this be why ImgBurn says there are errors?

[r0lZ]

I don't know, but it could be the reason, yes. Maybe both methods do not use the same header, and therefore the start sectors are shifted a bit.
What exactly is the error message?

[arnie.d]

It says:


E 22:28:36 Miscompare at LBA: 32, Offset: 4
E 22:28:36 Device: 0x5C
E 22:28:36 Image File: 0xFC
E 22:28:36 Total Errors in Sector: 10
E 22:28:36 Failed to Verify Sectors!
E 22:28:36 Operation Failed! - Duration: 00:02:22


Etc, lot of message like this one above

[r0lZ]

Strange, indeed. Seems it's a serious error. Next time you do the test, use the right ISO, and let me know if it worked. Thanks.

[arnie.d]

I didn't have the original ISO anymore, but I recreated it. Same errors.
I burned a different disc. Verified OK.

[LIGHTNING UK!]

It would help to see the full log but sector 32 is normally used by the filesystem so I'm not sure why it would change and the disc still play ok!

[blutach]

arnie.d - this happened to me once 2 weeks ago. Just a random verify error here and there (and in your case a couple of bits are wrong).

Turned out I had a bad bank of memory!! Do a very stringent memtest, just to be sure.

Regards

[jinjin_jp]

Ok didn't understand what you meant by 2_6 until I saw the updated graph.
I think it is like no. 2_6
EDIT: only I have nero 7.2.0.3b instead of 7.2.3.2b.
So to prevent nero from adding a second layerbreak I should set a layerbreak over the half?
Sorry to be late reply.
Yes. I think so.
Layerbreak can't be set under the half, because L0 <L1.
There are DVDs that the start sector of VIDEO_TS.VOB is very big like this (http://yaki2fan.hp.infoseek.co.jp/sub/br_fuguai.shtml). When data writing such DVD, sometimes layerbreak is under the half, so Nero set new layerbreak on over the half.
Nero adjust layerbreak by increasing the size of IFO file, but restricted because maxmum sector of adjusting is 16.
Other data writing softwares seems to be similar.

But PgcEdit+Imgburn can set layerbreak in such case.
So I recommed PgcEdit+Imgburn.

Regards.

[arnie.d]

@ Lightening UK!
I don't have the log anymore, sorry.

@ Blutach
How do I run a stringent memtest?

@ jinjin_jp
So PgcEdit+Imgburn can set the layerbreak under the half? That's cool.
So when ImgBurn is "completing" the disc after the burn it's filling up layer 0 to make larger than layer 1?

[r0lZ]

So PgcEdit+Imgburn can set the layerbreak under the half? That's cool.
So when ImgBurn is "completing" the disc after the burn it's filling up layer 0 to make larger than layer 1?
Not exactly. The gap is inserted between VIDEO_TS.VOB (or VIDEO_TS.IFO if VIDEO_TS.VOB doesn't exist) and VIDEO_TS.BUP, at the beginning of L0.
And, yes, that's cool! :)

[CWR03]

How do I run a stringent memtest?
www.memtest86.org is one example.

[jinjin_jp]

@jinjin_jp
So PgcEdit+Imgburn can set the layerbreak under the half? That's cool.
So when ImgBurn is "completing" the disc after the burn it's filling up layer 0 to make larger than layer 1?
Sorry to be wrong not to explain well.
I used layerbreak in 2 meaning, (1)descryption in IFO, (2)actual layer change in DISC.
ISO size is bigger than total size sum of each file, because it contains sectors before VIDEO_TS.VOB, blank between file and finally added.
Layerbreak in "PgcEdit+Imgburn can set the layerbreak under the half" means that
even when layerbreak writen in IFO is under the half of total file size, PgcEdit+Imgburn can set actual layerbreak adjust to layerbreak writen in IFO by creating blank sectors before VIDEO_TS.BUP as r01Z explained.
I suppose start sector of VIDEO_TS.IFO is almost same (about 300) and other data writing softwares can't adjust layerbreak over 16 sectors (only adjust to ECC block(16 sectors)), but PgcEdit+Imgburn doesn't have such restriction.