U977
31st October 2003, 09:53
Hello,
I hope I post my question at the right place. It's more about DVD structure in general, but my question is based on my understanding of what IFOEDIT displays.
I recently started to invest some time in learning more about the structure of DVDs.
I'd like to understand thet information that ifoedit displays.
And there is a gap that I did not manage to fill yet. I know what the files on the DVD are for, their content, what is a cell (well, I just know it's the smallest unit on a DVD), and so on.
Having read the Big3 backup method, for example, I saw examples of seamless branching, or layer breaks (demux by Vob-ID or not).
But I don't fully understand the link between VOB-IDs, cells and PGCs.
I take an example from the guide, a capture from IFOEDIT:
PGC_1 (program chain): [Title(TTN): 1] [00:25:59.21 / 30 fps] (Programs: 8) (Cells: 8) (uses VOB-IDs: 1,6)
[Ch 01] [Pg 01] [Cell 01] [V/C Id: 1/ 2] : time: 00:02:51.00 / 30 fps [Pos: 00:02:51.00] [Frames: 5130]
A PGC defines what cells should be displayed; in what order, that's right?
I see that cells seems to be first numbered according to the PGC they belong to (hence [Cell 01]), but cells are actually grouped in VOB content identified by the VOB-ID ([V/C Id: 1/ 2] means that Cell 1 from PGC_1 is actually the second cell of VOB-ID 1. Is that correct?
Cells are part of VOB content identified by a VOB-ID, and just displayed according to the PGC?
Thanks a lot for your help!
*** EDIT ***
I started to read some 2COOL guides. I began to understand that I'm... only at the beginning of understanding what can be found in IFOEDIT, and how to understand an IFO file, aw :-)
I hope I post my question at the right place. It's more about DVD structure in general, but my question is based on my understanding of what IFOEDIT displays.
I recently started to invest some time in learning more about the structure of DVDs.
I'd like to understand thet information that ifoedit displays.
And there is a gap that I did not manage to fill yet. I know what the files on the DVD are for, their content, what is a cell (well, I just know it's the smallest unit on a DVD), and so on.
Having read the Big3 backup method, for example, I saw examples of seamless branching, or layer breaks (demux by Vob-ID or not).
But I don't fully understand the link between VOB-IDs, cells and PGCs.
I take an example from the guide, a capture from IFOEDIT:
PGC_1 (program chain): [Title(TTN): 1] [00:25:59.21 / 30 fps] (Programs: 8) (Cells: 8) (uses VOB-IDs: 1,6)
[Ch 01] [Pg 01] [Cell 01] [V/C Id: 1/ 2] : time: 00:02:51.00 / 30 fps [Pos: 00:02:51.00] [Frames: 5130]
A PGC defines what cells should be displayed; in what order, that's right?
I see that cells seems to be first numbered according to the PGC they belong to (hence [Cell 01]), but cells are actually grouped in VOB content identified by the VOB-ID ([V/C Id: 1/ 2] means that Cell 1 from PGC_1 is actually the second cell of VOB-ID 1. Is that correct?
Cells are part of VOB content identified by a VOB-ID, and just displayed according to the PGC?
Thanks a lot for your help!
*** EDIT ***
I started to read some 2COOL guides. I began to understand that I'm... only at the beginning of understanding what can be found in IFOEDIT, and how to understand an IFO file, aw :-)