small quirk in rb

[kmac61]

It seems that rb counts cells as chapters when writing new
ifo's. I've seen this in the past but didn't look into it cause the difference was minor. Today I processed a title that had
67 cells and 51 chapters. The output from rb showed 67 chapters. It's not a big deal, I don't think it affects playability
and can be changed back in ifoedit before burning. Just seems a little curious

[jdobbs]

Rebuilder doesn't change the chapter structure from the original except in Movie Only mode -- so I assume that must be the mode you are using. This is done because the original IFO is not used and a new one is generated.

[Rippraff]

@jdobbs
Does this mean RB adds additional chapters in "Movie only" mode? :confused:

Cu Rippraff

[jdobbs]

Why would it possibly make a difference? It's a movie-only disc... you've removed all the menus and everything referencing the chapters. It does it exactly the same way as other packages (IFOEDIT, for example). The only thing the chapter stops are used for in movie-only is jumping through the film -- and you do that through cell points. Chapters have to start at cell points on the original too.

[Rippraff]

Maybe a misunderstanding, I was thinking of the chapters of the original main movie (the ones you can reach with prev/next) and was wondering if RB changes these chapters in the backup.

Cu Rippraff

[jdobbs]

In full backup mode DVD-RB keeps everything exactly as it was on the original. In movie-only mode for most chapters the answer is still no. Because the chapter points are the cells. Occasionally there may be an additional cell for one reason or another which now becomes an additional "stop" point in next/prev.

But, as I said, it really doesn't matter -- because there are no menus referencing them anyway -- which means there are no "chapters" anymore.

[kmac61]

this is only a "bookkeeping thing" ,rb does doesn't change any of the chapter points. One of the bad things of getting older is you tend to forget things, in the case of movies it's actually a good thing - i can watch some movies
I've seen before almost as if I've never seen them. so in these cases I might hit the display button to check where I'm at, say chap. 20 of 30 and then be surprised when the movie ends 10 min. later cause there was only 23 chap. for real
Certainly didn't mean to imply rb was changing anything in the playback or altering the actual chap. points

[jdobbs]

It could never be less than the original -- because the original had to have each chapter points at a cell boundary anyway. Also -- how would you come to the conclusion that there were 30 chapters to begin with? The IFO would match the number actually written so your player would tell you that number, and there are no menus... and you'd really have memory problems if you tried to commit to memory the number of chapters in every DVD you own.

The point I'm trying to make is: You've already decided to change the format of the disc from the original when you select Movie-Only mode. You can't remove the menus and keep it the same. DVD-RB is just doing what it has been told to do.

[jdobbs]

Whoops... just remembered something I did in v0.92:

- Modified Movie-Only creation so it recreates
the cell structure of the original DVD/PGC.
Previous versions built chapter tables based
upon the cell structure of the primary PGC.

Sorry, that was a long time ago. So -- actually DVD-RB always recreates the original chapter structure even in Movie-Only mode. Of course my argument still stands... but I guess I caved on this one already.

[magic144]

I was confused when I first started to read this thread!

I've always used Movie-only mode and never had a problem with chapter points changing (being added to) from the original :-)

Glad to see we're all forgetting a few things with age !!!

[kmac61]

Well, a thread about basically nothing can seem confused, it's
only about a silly little line in the video ts ifo with the wrong value and as it happens it doesn't matter if it has the right value or not. You could probaly enter any # you want, it only effects the info displayed as in display button on your remote, show info and go to in power dvd, ect.
Rb itself does a great job in movie only, pretty much always has.

[knife]

kmac61: If I understand you right you are trying to say that "VIDEO_TS.IFO\VMG_PTT_SRPT\Title_X:Number of chapters (PTTs)" do not correspond to the actual number of chapters in Title_X.

//Knife

[jdobbs]

Ahhh.... if so, I've been answering the wrong question. I'll take a look at it.

[Edit] Nope... I checked that entry and it seems to be set correctly (number of chapters, not number of cells).

[Rockas]

OT:
Well... I would be happier if the "forgetting" stuff could be somehow related with my signature... but you guys really love to get old don't you? lol