2017-10-05 21:44 GMT+02:00 Carl Eugen Hoyos <ceffm...@gmail.com>: > I tested the following with the sample from ticket #503: > $ ffmpeg -i rgba64le-lzw.tif -vf palettegen pal.png > $ ffmpeg -i rgba64le-lzw.tif -i pal.png -lavfi paletteuse out.gif > > The output file has its background (that is supposed to be > transparent) converted to white (which I believe is good) > but the respective colour white (that is the 256th and last > colour in the palette) is not transparent but opaque (0xff). > Instead the first colour (0x00ff00) is the only transparent > colour in the palette. The output gif is opaque. > > I confirmed that if I force the first palette entry to opaque > (0xFF00FF00) and the last one to transparent (0xFFFFFF) > in apply_palette() I get the expected transparent output with > above command line.
Forgot to mention: I can reproduce this exact behaviour writing a png image: $ ffmpeg -i rgba64le-lzw.tif -i pal.png -lavfi paletteuse out.png Carl Eugen _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel