Jacket_P and Layer Break

[Big_Evil_Undertaker]

"Create a JACKET_P folder" for DVD-Video (Build Mode)

 

"Layer Break Detection" directly from original DVD (Verify Mode)

[LIGHTNING UK!]

I've seen players want (need) an audio_ts folder but never a jacket_p one - so I fail to see what function this serves, sorry! To have the folder with no content (which is what this would do) could actually mess things up for certain players that expect to see files in the folder if the folder exists.

 

And I don't really understand point 2. What is there to verify?! If you have an image file format that supports storing the LB, it will have been taken from the original disc in the first place. Please feel free to explain your suggestion so everyone other than yourself understands what you mean.

[Big_Evil_Undertaker]

I've seen players want (need) an audio_ts folder but never a jacket_p one - so I fail to see what function this serves, sorry! To have the folder with no content (which is what this would do) could actually mess things up for certain players that expect to see files in the folder if the folder exists.

 

And I don't really understand point 2. What is there to verify?! If you have an image file format that supports storing the LB, it will have been taken from the original disc in the first place. Please feel free to explain your suggestion so everyone other than yourself understands what you mean.

 

I try to explain with an example:

 

I insert a DVD9 in my DVD Reader and then I use Verify Mode to see (Disc Information), (Physical Format Information) and (Layer Information)..

 

So, I said If was possible to add a LB Detection (visible in the Layer Information) directly when I insert DVD9.

 

IDE-DVD DROM6216 HD08 (ATA)

Current Profile: DVD-ROM

 

Disc Information:

Status: Complete

Erasable: No

Sessions: 1

Sectors: 3.624.799

Size: 7.423.588.352 bytes

Time: 805:32:49 (MM:SS:FF)

 

Physical Format Information (Last Recorded):

Book Type: DVD-ROM

Part Version: 1

Disc Size: 120mm

Maximum Read Rate: 10.08Mbps

Number of Layers: 2

Track Path: Opposite Track Path (OTP)

Linear Density: 0.293 um/bit

Track Density: 0.74 um/track

First Physical Sector of Data Area: 196.608

Last Physical Sector of Data Area: 16.576.190

Last Physical Sector in Layer 0: 2.011.215

 

Layer Information:

Layer 0 Sectors: 1.814.608 (50,06%)

Layer 1 Sectors: 1.810.191 (49,94%)

(What's the Layer Break?)<---------------

[blutach]

(What's the Layer Break?)<---------------

In your case 196,608 + 1,814,608 -1 (cos the sectors start numbering at 0) = 2,011,215 (which equals the last physical sector in layer 0)

 

Regards

[LIGHTNING UK!]

Actually, it's even easier than that. The 'Layer Information' is in REAL sectors, not those offset by the 'First Physical Sector of Data Area'.

 

So the LB address (or rather, first LBA on L1) is just 1,814,608.

[JasonFriday13]

Layer 0 Sectors: 1.814.608 (50,06%)

Layer 1 Sectors: 1.810.191 (49,94%)

Maybe you could change these to commas instead of dots (fullstops)?

 

[edit]Doh! And change the fullstops to commas on the percent? (posted too quickly)[/edit]

Edited October 25, 2006 by JasonFriday13

[blutach]

@JasonFriday13

 

The "." and "," are dependant on your regional settings. Pop a DVD in and see for yourself.

 

Regards

[Big_Evil_Undertaker]

My regional settings are Region2 (ITA)...

 

I didn't know that LB is = to L0 sectors. Now it's all OK.

Thanks to all for the explanations

[Dolt]

My regional settings are Region2 (ITA)...

 

I didn't know that LB is = to L0 sectors. Now it's all OK.

Thanks to all for the explanations

 

L0 is the first layer

L1 is the second layer

the layer break occurs on the last LBA of L0

or in the example it's at 1810190.

 

As far as a JACKET_P directory goes just copy it like any other directory

into the same subdirectory as where the VIDEO_TS directory is located

and it will put them both into the image when you select that directory

as your source.

[blutach]

My regional settings are Region2 (ITA)...

 

I didn't know that LB is = to L0 sectors. Now it's all OK.

Thanks to all for the explanations

 

L0 is the first layer

L1 is the second layer

the layer break occurs on the last LBA of L0

or in the example it's at 1810190.

 

As far as a JACKET_P directory goes just copy it like any other directory

into the same subdirectory as where the VIDEO_TS directory is located

and it will put them both into the image when you select that directory

as your source.

Just to add - DVD Rom files, like Jacket_P folder should be at the end of the image.

 

Regards