Melt autoprofile sounds like something that manipulates consumer in application layer, independently of its internal mechanics. This raises new question - I noticed in get_image(), that the width and height returned may not be the same as the width and height requested by consumer (these are [in,out] parameters). So what are the producers and consumers responsibilities when it comes to that? Are there any? I mean, I can imagine a scenario where producer cannot produce image of given width and size and returns slightly different image. What should the consumer do in that case? Or maybe I should guarantee that producer always produces requested frames?
------ Best, Paweł > Wiadomość napisana przez Christophe Thommeret <hf...@free.fr> w dniu > 08.06.2016, o godz. 22:35: > > Le 08/06/2016 22:20, Paweł Goliński a écrit : >> Hello all, >> >> As this is my first mail, I’ll do a short introduction. My name is Pawel >> Golinski and I’m one of the >> students involved in VLMC development as part of GSoC 2016. My current >> objective is to implement >> a libvlc producer and it requires a through understanding of MLT internals. >> The documentation and framework >> are great, but as these are my first steps, I’m having problems with the >> simplest things… >> >> My current problem is that I would like somehow to control consumer’s width >> and height from my producer. >> I’ve noticed that this is somehow being done by the avformat producer, which >> somehow tells sdl consumer >> to resize its window to match the video size. My first guess was, that it >> could be done through width and height >> pointers passed to get_image() function of mlt_frame, but changing these >> don’t cause sdl to resize itself - my >> testing ground is color producer - I’m changing *width and *height to some >> random values at the beginning of >> the function, but this doesn’t cause sdl to resize itself. I’ve also >> searched in some other places, but to no avail. >> >> So, is there a simple explanation of how avformat is doing its magic? To be >> more exact, why calling >> melt avformat:file causes sdl window to be the same size, as the video file >> is pointing to? > > Could it be melt autoprofile ? > >> I suppose it >> cannot be through profile mechanism, as avformat pretty much uses profile >> just to determine fps it has >> to output (right?). Any hints? >> >> Best regards, >> Paweł >> ------------------------------------------------------------------------------ >> What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic >> patterns at an interface-level. Reveals which users, apps, and protocols are >> consuming the most bandwidth. Provides multi-vendor support for NetFlow, >> J-Flow, sFlow and other flows. Make informed decisions using capacity >> planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e >> _______________________________________________ >> Mlt-devel mailing list >> Mlt-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/mlt-devel > > > -- > Christophe Thommeret > > > ------------------------------------------------------------------------------ > What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic > patterns at an interface-level. Reveals which users, apps, and protocols are > consuming the most bandwidth. Provides multi-vendor support for NetFlow, > J-Flow, sFlow and other flows. Make informed decisions using capacity > planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e > _______________________________________________ > Mlt-devel mailing list > Mlt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/mlt-devel ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. https://ad.doubleclick.net/ddm/clk/305295220;132659582;e _______________________________________________ Mlt-devel mailing list Mlt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mlt-devel
