Re: [DCP-o-matic] subtitle error

Very little experience with GDC. I'm adding my colleague in case she remembers any case. Subtitles errors are rare even during festivals, but usually fatal and easy to remember :) We have never seen our usual workflow fail, either direct from dom or SMPTE with michaelcinquin with first and last empty. Manuel AC On Tue, Feb 23, 2016 at 11:10 AM, lilian lefranc via DCPomatic <dcpomatic(a)carlh.net> wrote: > > Le 22/02/2016 20:36, Manuel AC via DCPomatic a écrit : >> >> The first one empty is for one of those legendary errors that nobody >> has ever seen but we keep avoiding :) It goes to say that timing will >> be off-sync if there is no subtitle on timecode 0. Like it will treat >> the first subtitle as 0 and ignore the actual timecode, in a similar >> manner it ignores an entry point. > > Maybe that's why I'm facing issues with 25fps SMPTE subtitles and GDC > servers. > Have you ever experiencing 25fps DCP with subtitles and GDC? > The only solution I found is to use IOP subtitles for now... >> >> >> The last one is for SMPTE, don't do it and just wait for a (non) >> projection with an Alchemy server. >> Supposedly it just need to be longer than the other content of the >> reel. I would not be surprised to see a server making random errors if >> the last subtitle have a very high timecode instead of the actual reel >> length. >> Anyone knows the reason behind that length requirement for SMPTE? It's >> pretty annoying. >> >> >> >> On Mon, Feb 22, 2016 at 11:11 AM, lilian lefranc via DCPomatic >> <dcpomatic(a)carlh.net> wrote: >>> >>> Le 22/02/2016 10:47, Manuel AC via DCPomatic a écrit : >>>> >>>> On Mon, Feb 22, 2016 at 9:44 AM, lilian lefranc wrote: >>>>> >>>>> Why do you have empty subtitles at the beginning and the end of your >>>>> files? >>>>> It is not necessary for interop and it causes troubles for servers in >>>>> many cases! >>>>> >>>> What combination of factors have you seen fail for that case? I only >>>> use SMPTE but it's always good to know. >>> >>> It causes display issues in some cases (empty subtitle in the middle of >>> the >>> reel). >>> Subtitles after an empty one may not display. >>> I saw it one time, but I can not say if it's a common issue. >>> In doubt I recommend not to use empty subtitles in Interop, as it has no >>> utility. >>>> >>>> >>>>> For smpte I recommend not to put the empty subtitle (ONLY) at the end, >>>>> it >>>>> is better if the mxf wrapper does it, as it know the reel duration it >>>>> will >>>>> wrap. >>>>> >>>> michaelcinquin would not add the empty subtitles unless you told the >>>> tool to do so, and it does not have access to the reel duration >>>> because it only receives a subtitle file. >>> >>> I don't use this tool so I don't know how it handles the files. >>> >>> If you look at the versioning tool, it asks for the CPL file so it knows >>> the >>> reel duration. >>> If not, you have to know the reel duration before wrapping, that's why it >>> asks for the last TC. >>> No idea why to let an empty one at the beginning, for me it has no >>> utility. >>> >>> Lilian >>>> >>>> >>>> Manuel AC >>>> >> >> _______________________________________________ >> DCPomatic mailing list >> DCPomatic(a)carlh.net >> http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic > > > > > _______________________________________________ > DCPomatic mailing list > DCPomatic(a)carlh.net > http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic -- http://akadcp.com/ https://www.facebook.com/akadcp _______________________________________________ DCPomatic mailing list DCPomatic(a)carlh.net http://main.carlh.net/cgi-bin/mailman/listinfo/dcpomatic