On Tue, Feb 7, 2012 at 2:06 PM, j-b-m <j-...@users.sourceforge.net> wrote: > On Tuesday 07 February 2012 10:32:24 Dan Dennedy wrote: >> On Tue, Feb 7, 2012 at 10:08 AM, j-b-m <j-...@users.sourceforge.net> wrote: >> > Hello. >> > >> > Trying to improve image sequence support in Kdenlive, I discovered that >> > MLT >> > cannot currently load a sequence with files like this: > > (...) > >> We could simply increase the hard-coded 100 to something much higher >> like INT_MAX. If you can do that and see how long it takes to fail on >> an invalid input, that would be great. Of course, it will actually >> vary depending on the machine, but just to get an idea... > > I tried increasing the max limit to INT_MAX but it then takes several minutes > on a modern laptop (core I7).
yeah, not good :) > Setting a max limit of 1 million, it takes between 1 and 8 seconds to process > all possible file names, depending on the computer load. Was that for a single producer init? > However I was surprised to discover that the image producers are called twice. > > For example if I try: > > melt image%d.jpg > > the pixbuf producer is initialized, then closed and initialized again, which > means that the filename processing routine is called twice. Not surprising to me at all. Melt is trying to do a safer approach to auto-profile by re-opening the composition instead of just asking all producers in the composition for the first frame again. Maybe it is not really necessary. Do you think I should change melt now to not do that? Maybe it will have a bad effect on kdenlive rendering. Or, do you always specify a -profile to melt, which bypasses the auto-profile step? > Maybe that is necessary for MLT. But worse, when there is no matching > filename, it does the following: > > Create pixbuf producer > Create qimage producer > Create pixbuf producer > Create qimage producer > > And then it aborts... Seems a bit too much. When a producer returns NULL, I > don't see a reason to try it again. > > regards > jb ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
