On Wed, 7 May 2014 00:37:41 +0200, Alessandro Ghedini <[email protected]> wrote: > Hi, > > I've been working on merging the GIF encoder from ffmpeg, since libav's > doesn't > seem to work very well (in my tests anyway), and my initial approach has been > to > simply copy/paste lavc/gif.{c,h} and lavf/gif.c, make them compile and see how > it goes (I'm using libav.git). > > While I've been able to compile the whole thing (with a little bit of work, > due > to missing av_copy_packet() and ff_alloc_packet2()), I'm still having problems > apparently related to pixel formats. > > Basically, when I'm using ffmpeg (ffmpeg -i test.mkv test.ffmpeg.gif) it > selects > "bgr8" and everything goes fine. > > > Output #0, gif, to 'test.ffmpeg.gif': > > Stream #0:0: Video: gif, bgr8, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, > > 200 kb/s, 100 tbn, 30 tbc > > but when I use avconv, it selects "gray" (which is not what I want): > > > Output #0, gif, to 'test.libav.gif': > > Stream #0.0: Video: gif, gray, 1920x1080 [PAR 1:1 DAR 16:9], q=2-31, > > 200 kb/s, 100 tbn, 1k tbc > > and if I use "-pix_fmt bgr8" the output image is broken. > > Compare [0] generated with ffmpeg, and [1] genenerated with "improved" avconv. > > I've also tried copying lavu/pixdesc.{c,h} too, but nothing changed, and it > happens with all the other input files I've tried, so it shouldn't be specific > to the input file used. > > Does anyone have an idea of what may be causing this? (e.g. if there's a > special > avconv option I have to use, or if it is a bug in the gif encoder or in other > parts of libav). > > If you want to test this I've setup a fork of libav.git at [2] with my WIP > patches (they still need to be split in proper commits) in the "gif" branch. >
ping So what happened to sending this? -- Anton Khirnov _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
