90 plus title sets??

[fatstrat]

I have came across a few Dvd's here lately with this. When I run it through Pgcedit, pgcedit lags. Is it because all of the dummy cells in the VTS?
rOLZ? blutach?

Also is best to blank those vts and have fixvts take care of them?


Strat

[r0lZ]

Although PgcEdit is very slow (due to the interpreted nature of its language) when there are several thousands of uncalled PGCs in a DVD, you can remove all of them with DVD -> Delete Uncalled PGCs. Just be patient!

[Calimari]

Just like rOLZ said, give it some time. I've had those doubts too on a 90+ VTS disc when I let PgcEdit delete the uncalled PGC's. I thought it crashed, but after waiting a bit longer and having two coffees, PgcEdit 'woke up' again and it did a very nice cleaning job.

[r0lZ]

BTW, I am aware of this problem. The next version of PgcEdit will have another function to delete the uncalled Titlesets. This function will not delete the uncalled PGCs in the Titleset that are called partially, but is very fast (because it is only necessary to analyze the VMG to discover which VTSs are uncalled globally, and it is easy to remove all of them at once.)

After using that new function, it will be faster to use Delete Uncalled PGCs to finish the cleanup, as most of the useless commands are already removed, and are therefore not analyzed any more.

I have tested this new function with a DVD with 91 uncalled VTS and 80 PGCs per VTS, and the function took 1 second to delete all of them (because it was not necessary to remap the Title numbers.)
When it is necessary to remap the title numbers, the function can take between 10 and 30 seconds more to search for SPRM 4 and do the remapping. Anyway, it is really faster than Delete Uncalled PGCs.

[fatstrat]

Thanks for the quick responce!!

Thats what I thought...I will have it a go Tonight. Believe me I can be patient, I have plenty of beer to keep me occupied!!

Strat

[fatstrat]

Can't wait to use the next version!

Nice job.

Strat

[Calimari]

@rOLZ

Nice feature. Any idea when the next beta will be released?

Also, can I make a suggestion?
Take the follwing code
1 if ( gprm(8) == gprm(8) then { Goto line 3 }
2 (JumpSS) Jump to VTSM 99, Root menu (TTN 1)
3 (JumpSS) Jump to VTSM 1, Root menu (TTN 1)
Line 2 will never be executed, so VTS99 wil never be called. But I guess it won't be detected as uncalled (or will it, you'll know this better than I do).

PgcEdit has a handy function 'GPRM's' in the info section. It shows how many times a GPRM is used. Would it be hard to implement something similar for the titlesets? A titleset that's only called once is probably a useless one, the user then can investigate the use of it, and eventually delete the calling command before executing the (new) 'delete uncalled titlesets' funtion.
This can be done now easily with the 'Jumps from VMG to current VTS' function, but I guess on a title with 99 VTS', it'll save a lot of time by bringing the suspicious VTS' in the spotlight.

[blutach]

titleset that's only called once is probably a useless one

Far from it. Many times a VTS is called, plays something (eg the DD trailer) and reverts back to VMGM to go elsewhere.

As for your other observations re the uncalled line 2, you are correct. It can be replaced with a NOP. However, AFAIK, PgcEdit doesnt have an "auto trace" function to analyse this. So user intervention is required in this case.

Regards

[r0lZ]

That's right. It is too complex, and time consuming to analyze all commands, in the whole DVD. I can't automatize that.

However, I agree that a function similar to the Calls Cross-references but showing only the jumps from the VMG to the VTSs is probably useful. Maybe I can do that easily, but I have to re-read my code to be sure...

[Calimari]

Many times a VTS is called, plays something (eg the DD trailer) and reverts back to VMGM to go elsewhere.

I know, what I really meant was the useless VTS' as we see in ARccOS movies, those don't play anything and are not uncalled.
But I agree, in your example, it's up to the user to decide wether that titleset is useless or not. It would be a trailer that plays only once, eg. in front of the movie. FBI-warnings, trailers in a foreign language, studio logo's, etc. all those are titlesets that are called only once, but most users don't want them in their backup. They aren't accessable by a button in the extra's or something.
So, when these are detected, anyone who understands a littlebit of DVD commands, can easilly make them uncalled to have them deleted by PgcEdit's new function.

That's right. It is too complex, and time consuming to analyze all commands, in the whole DVD. I can't automatize that.

I agree. But I wasn't pointing that direction.

Maybe I didn't express myself correctly. The idea was to highlight the titlesets that are not uncalled but probably need a closer look from the user. Something like giving them another color like 'Find uncalled PGCs' does, or placing them in a list. But without actually deleting them because this would also destroy titlesets who aren't useless to some, as in Blutach's example.

As for your other observations re the uncalled line 2, you are correct. It can be replaced with a NOP.

Hm, I always delete those lines, as PgcEdit corrects all remaining linenumbers and GOTO's. Something I should avoid?

[r0lZ]

Hm, I always delete those lines, as PgcEdit corrects all remaining linenumbers and GOTO's. Something I should avoid?

In the early days of PgcEdit, i would have said yes, as I was not sure that the renumbering was always perfect. But now, I'm confident it can be used safely. So, in your example, you can safely delete lines 1 and 2, to make VTS 99 uncalled.