Strange PreCommand with Recode 2?

[samtroy]

I just saw that Recode 2 adds a new Pre- and PostCommand to each processed Movie-IFO (which wasn't in the original IFO):

1.Pre Command: Set GPreg<0> mov (set-val)<0>
2.Post Command Exit

Hmmm... does anybody know what this is good for?
:confused:

[2COOL]

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Set GPreg<0> mov (set-val)<0>........[71 00 00 00 00 00 00 00]

This command updates the contents of a specified GPreg (General Parameter Register) by a 16 bit constant value.
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Exit.................................[30 01 00 00 00 00 00 00]

This command terminates the playback of a video DVD. Most DVD player displays its manufacturer's logo or a system hardware menu when this command is executed.
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If you want to know all about commands and more, be enlightened and check here (http://www.dvd-replica.com/DVD/vmcommands.php).

Since Recode is a lot like DVD Shrink, read here (http://forum.doom9.org/showthread.php?s=&threadid=61238) also.

[samtroy]

Thanks a lot for the info and the interesting link.

I don't really understand why this is added by Recode 2 though, since it's not present in the original IFO...

Any ideas?

S.

[2COOL]

Originally posted by samtroy
I don't really understand why this is added by Recode 2 though, since it's not present in the original IFO...Since you re-authored and you don't have menus, you have two choices. Either terminate titleset play or loop titleset play. Recode 2's default is to only give you termination. If you want to loop or any jumps, you must make the changes manually using IfoEdit.

[samtroy]

OK, after some more reading I realized that this command is important for multi-title DVDs. Since I only create single-title/movie-only DVDs the GPreg pre-command wouldn't be really necessary, would it?

Well, at least now I know it's not affecting the movie in any unintended way... :cool:

Thanks again for your help.

[2COOL]

Originally posted by samtroy
OK, after some more reading I realized that this command is important for multi-title DVDs. Since I only create single-title/movie-only DVDs the GPreg pre-command wouldn't be really necessary, would it? It can be used for single title DVDs too. It can be set up to jump to a certain chapter if the Gpreg is set to a certain value. Gpregs are like variables.