Hi, On 11/27/17, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > 2017-11-27 18:50 GMT+01:00 Bjorn Roche <bj...@giphy.com>: >> Sorry for the very delayed response, Carl: >> >> On Tue, Nov 21, 2017 at 6:55 PM, Carl Eugen Hoyos <ceffm...@gmail.com> >> wrote: >> >>> 2017-11-21 18:53 GMT+01:00 Bjorn Roche <bj...@giphy.com>: >>> > Support for transparencies in animated gifs requires modifying both >>> > libavcodec/gif.c and libavformat/gif.c because both the graphics >>> > control extension (handled by libavformat/gif.c) and the raw frame data >>> > (handled by libavcodec/gif.c) must be changed. >>> >>> Does remuxing animated gif with transparency work with your patch? >> >> A command like this: >> >> ffmpeg -i in.gif out.gif >> >> seems to produce the same output as before: transparency replaces >> with opacity. > > remuxing == -vcodec copy > > What about ffmpeg -i in.gif -vcodec copy out.gif ? > >> However a command like this: >> >> ffmpeg -i in.gif -vf palettegen -y /tmp/pal.png && ffmpeg -i in.gif >> -i /tmp/pal.png -lavfi paletteuse -y -f gif out.gif >> >> produces an output that looks like the input (including transparency). >> >> I believe this is a problem with the decoder, however, since >> >> ffmpeg -i /Users/bjorn/Desktop/smoketrail.gif >> /Users/bjorn/Desktop/smoketrail-out%d.png > > This produces transparent images here for the output > file of ticket #6813.
Can anybody get this patch to output correct output for this command: ffmpeg -v debug -f lavfi -i testsrc2=d=10:alpha=0,format=rgba -lavfi "[0:v]palettegen[p],[0:v][p]paletteuse" 1.gif ? _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
