Quick PGCEdit Question

[ron spencer]

First...great prog.....


Now the issue:

I am sure everone knows that you can create a trailing chapter of sorts (not really a chapter) by having PGCEdit change the NextPGCN of a video from zero to the current PGC. That is if the video is PGC 2 you enter the NextPGCN to be 2 and so on. This whay when a user hits the next chapter button on the remote and hits this last "chapter" the DVD immediately run the post commands...thsi way a user cannot "chapter out" of a move/playlist etc.

Question: why does this work....I would think that this would make a movie loop? Can anyone explain what is physically going on here? works well though

[r0lZ]

Look here (http://forum.doom9.org/showthread.php?s=&threadid=87630#post590791).

[ron spencer]

thanks....what is real difference between nextpgc and nextpgcn ?

[r0lZ]

None. The N stands for Number.

[ron spencer]

I thought that...but in PGCEdit when you open up a PGC's properties you see you can enter values for NextPGC and NextPGCN...How are these different?

Thanks again....justwant to clarify given the post you referred to when you say:

"1) The cell command, if any, is executed. If the cell command jumps to another PGC, program or cell, then continue with that PGC, program or cell.

2) If, after the cell command, the playback point is still at the end of the PGC, then execute the post-commands. If one post command jumps to another PGC, program or cell, then continue with that PGC, program or cell.

3) At this point, if the playback point is still at the end of the PGC, then the NextPGC link is used to jump to that PGC. Obviously, if the NextPGC link is the same as the current PGC, this will force the PGC to loop back at the beginning.

4) If the NextPGC link is 0, then exit playback.

If the NextPGCN is > 0, then pressing the Next Chapter button when in the last program of the PGC will interrupt the playback, and junp directly to point 2 above (skipping the Cell command).
If the NextPGCN is 0, then nothing happens.

This means that the NextPGCN is used for two purposes:
1) To enable the use of the Next button.
2) To jump to the specified PGC, if there was no cell or post commands with a jump/call or link."

Just want to be claer of the differences between NextPGCN and NextPGC in the interface and in the explanation.

thanks again!!!!

[r0lZ]

Where do you see two NextPGC/NextPGCN values in PgcEdit?
There are only the PrevPGCN, NextPGCN and GoUpPGCN.

[ron spencer]

it is not in front of me now...but I thought I saw it....I will post back later if you want to check then. I could download now....but I do not have a simple dvd here. Do you have a link to a simple DVD structure to download....I may be wrong..but I would like to figure it out if you are online here

[ron spencer]

you are right...my mistake....what is there is PGCN all by itself...what is this for?

[r0lZ]

PGC stands for Program Chain. PGCN for PGC Number.

In the PGC Editor, you have the PrevPGCN, NextPGCN and GoUpPGCN values. The corresponding buttons on the remote are respectively Previous Chapter, Next Chapter and Return.

The GoUpPGCN is special: in menu domains, if the value of the GoUpPGCN is 65535 (hexadecimal FFFF) then the action to execute is a RSM (resume to title domain whenever the Return menu button is pressed).
Therefore, in the GUI, the GoUpPGCN option has two possible usages: GoUp -> PGCN (jump to a specific PGC if > 0) and GoUp -> Resume (RSM, value 65535.)

[ron spencer]

this makes sense now!!!! thanks