Fractional-second chapter times?
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Fractional-second chapter times?
by Lawrence D'Oliveiro-2
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Chapter times must currently be of the form [[hh:]mm:]ss, which means an
integer number of seconds. However, the underlying timestamps, as per the DVD-Video spec, are in steps of a 90kHz clock frequency. Would it make sense to allow chapter settings down to the corresponding fractions of a second? ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge _______________________________________________ Dvdauthor-users mailing list Dvdauthor-users@... https://lists.sourceforge.net/lists/listinfo/dvdauthor-users |
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Re: Fractional-second chapter times?
by Giacomo Comes-2
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On Thu, Jul 09, 2009 at 11:12:17PM +1200, Lawrence D'Oliveiro wrote:
> Chapter times must currently be of the form [[hh:]mm:]ss, which means an > integer number of seconds. However, the underlying timestamps, as per > the DVD-Video spec, are in steps of a 90kHz clock frequency. > > Would it make sense to allow chapter settings down to the corresponding > fractions of a second? To my knowledge, dvdauthor does already support chapter settings with fraction of seconds. An xml file containing something like: <vob file="source.mpg" chapters="0,151.994,300.123" /> or a command line like: dvdauthor -c 0,151.994,300.123 source.mpg has always worked for me. Also the online help (dvdauthor --help) says: --chapter[s][=COPTS] or -c COPTS or -C where COPTS is a comma (,) separated list of chapter markers. Each marker is of the form [[h:]mm:]ss[.frac] and is relative to the SCR of the next file listed (independent of any timestamp transposing that occurs within dvdauthor). The chapter markers ONLY apply to the next file listed. COPTS defaults to 0 Am I missing something? Giacomo ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge _______________________________________________ Dvdauthor-users mailing list Dvdauthor-users@... https://lists.sourceforge.net/lists/listinfo/dvdauthor-users |
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Re: Fractional-second chapter times?
by Scott Smith-8
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On 7/9/09, Lawrence D'Oliveiro <ldo@...> wrote:
> Chapter times must currently be of the form [[hh:]mm:]ss, which means an > integer number of seconds. However, the underlying timestamps, as per > the DVD-Video spec, are in steps of a 90kHz clock frequency. > > Would it make sense to allow chapter settings down to the corresponding > fractions of a second? The bigger problem is making sure your mpeg has a GOP boundary exactly where you want the chapter. And as Giacomo said, you can specify fractions of a second. -- Scott ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge _______________________________________________ Dvdauthor-users mailing list Dvdauthor-users@... https://lists.sourceforge.net/lists/listinfo/dvdauthor-users |
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Re: Fractional-second chapter times?
by Lawrence D'Oliveiro-2
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Giacomo Comes wrote:
> To my knowledge, dvdauthor does already support chapter settings with > fraction of seconds. Ah, you're right. I should have checked the man page for that "strtod" call in the parsing routine. :) Did you know it also allows a few other things? Like hexadecimal representation, infinity and NANs? ------------------------------------------------------------------------------ Enter the BlackBerry Developer Challenge This is your chance to win up to $100,000 in prizes! For a limited time, vendors submitting new applications to BlackBerry App World(TM) will have the opportunity to enter the BlackBerry Developer Challenge. See full prize details at: http://p.sf.net/sfu/Challenge _______________________________________________ Dvdauthor-users mailing list Dvdauthor-users@... https://lists.sourceforge.net/lists/listinfo/dvdauthor-users |
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