Scenarist warnings

[Reptice]

Hi
I'm new to this forum (in posting, not in reading !) and i'd like to thanks all the contributors, i've learned a lot here.

I'm using Scenarist and I get some warnings when i compile.
First, I put each track in a different PGC and I get these warnings :
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Warning The total number of PTTs 575 and Titles 1 is more than 511. (VTS: "VTS_1")
Warning The total number of PGC's 575 in VTS "VTS_1" Title area is more than 242.
Warning Some DVD players have problems with this limitation.
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I tried to reduce the number of PGCs by adding my tracks in Cells instead of creating a new PGC for each one. I don't get the warnings anymore, but i have a new one !

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Warning The LinkCN command cannot jump to cell numbers 16 or higher. ("Cell Command": PGC "PGC:<t0-t-pgc_1> (Title:<Title2> VTS:<VTS_2>) ")
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As it's just warning and not error, i had my projects compiled.
I tried to play the 2 versions on different DVD player, and they both play fine.

I was wondering about the importance of this warning. Are these limitations in DVD Specs ? or is it just a warning for some "old" players ?
if anyone can help ...

Rep'

[dgoodbourn]

Hi,

The first warning sounds like you were putting more than one PGC into a Title. It's always advisable not to do this, as it causes issues with the timecode.

The second warning, I think isn't a spec thing, but more a player issue. It should be fine, but you might find issues with older/cheaper players not functioning properly.

Why not add the videos as Programs and not Cells, this way you can jump to them, just like you would chapters, but remember, you're limited to 99 per Title.

D.

[Reptice]

thanks dgoodbourn for your answer,

Ok for the timecode issue but time display is not important, so there's no matter using several PGCs. But this limit of 242 Title PGCs per VTS seems so weird to me, just wanted to understand why. Anyone knows about this ?
I also test the limit of Menu PGCs (i'm curious!), and i got a warning at 128 PGCs. (128 is a "good" number compare to 242 no ?! :D )

I tried to add my videos as Programs and not Cells. But I got again a part of the first warning "number of PTTs is more than 511". Now I'm a bit confused as you told me about the limit of 99 Programs per Title. I got no warning before i reached the number of 511 Programs. And for me Program = PTT (=Chapter), am i wrong ?

[dgoodbourn]

Sorry, but I'm not sure where the limit of 242 Title PGCs per VTS comes from. Probably some kind of spec issue. As for the menu PGCs, don't worry about going over 128, I very often go over this, with no aparent issues at all.

The 99 'chapters' limit is a DVD Display thing. Most players can only display 2 characters, so 99 being the maximum. What version of Scenarist are you using? Whenever I add more than 99 programs to a PGC in a Title, when it muxes, is states "The number of program<120> exceeds the max number<99>" I'm using v2.7

D.

[Reptice]

Ok for the display thing for chapters, so 99 is a logic value.
I'm using v3.0 and the programs limit warning seems to be 511 now. Do you get an error (can't mux) or just a warning when above 99 programs ?

As you say, it seems to cause no problem to go over 128 Menu PGCs, or 242
Title PGCs. Not on my sony player at least...

Rep'

[mpucoder]

The important part of the Scenarist warning is "some players have problems...". It is only warning you about known problems with early players. Memory was more expensive and physically larger in the early days, so a lot of players set arbitrary limits on table sizes to fit everything in to the limited memory. Modern players should not have these issues.

However you are also encountering some spec limits. 99 is the limit for programs in one PGC, and therefore the chapter limit for a single PGC title. There can be no more than 255 cells per PGC, no more than 999 ptt (chapters) per (multi-PGC) title.

[Reptice]

Thanks mpucoder,

i though it was something like this. So, there is no limitations in DVD Specs on the number of (Title or Menu) PGCs, Programs... ?

[mpucoder]

Yes, there are limits. I listed a few above. In addition to those, no more than 32767 PGC's per domain.

[Reptice]

:thanks: again mpucoder for the info.