Re: Cannot find PGC with entry 60000.0/1001.0 (NTSC FIELD RATE)

On Wed, 2010-07-07 at 15:48 +1200, Lawrence D'Oliveiro wrote:
> On 07/07/10 14:33, Ben Hutchings wrote:
> 
> > I believe the specified maximum number of menus is exactly 128.

I no longer think this.

> This page <http://www.dvd-replica.com/DVD/titledisplay.php> says a 
> maximum of 99 titles, and this one 
> <http://www.dvd-replica.com/DVD/vtsguide.php> 99 titlesets. Not sure 
> where I got the menu limit from, but this page 
> <http://www.alldj.com/sdvdc/support.htm> among others says 99.

<http://www.dvd-replica.com/DVD/linkpgcn.php> says "PGCs within a domain
are numbered from 1 and counted up sequentially to a limit of 999. ...
In the VMG and VTSM domain, the PGCs are numbered from 1 for each
language unit present in the domain."

> > dvdauthor appears to reserve some values for entry points so that the
> > usable maximum is 119.
> 
> DVDAuthor does not use any numbers that might be confused with valid 
> numbers of menus, titles or anything else.

Well, the grammar for menu or title number does this:

jtml: MENU_TOK NUM_TOK {
    $$=$2;
}
| MENU_TOK {
    $$=120; // default entry
}
| MENU_TOK ENTRY_TOK TITLE_TOK {
    $$=122;
}
...

and NUM_TOK can be any value from 0 to 65535 here.  So, whether the
limit is 99 or 128 or 999, the grammar does allow specified menu numbers
to conflict with the values for entry points.

Ben.

-- 
Ben Hutchings
Once a job is fouled up, anything done to improve it makes it worse.

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