Quality, it completely kills the compression of GIF: % ffmpeg -v warning -ss 45 -t 2 -i big_buck_bunny_1080p_h264.mov -vf scale=300:-1:sws_dither=ed -y bbb-error-diffusal.gif Picked in the palette and the expected one) will spread all over the image,Ĭausing a "swarming effect" between frames, even in areas were the source wasĬompletely identical between frames. The principle is that a single color error (the difference between the color Most of the other dithering methods you will find out there are error based. Has many benefits such as being predictible, fast, and actually preventingīanding effects and similar visual glitches. Recognizable by its 8x8 crosshatch pattern. In theīig Buck Bunny GIF above, the ordered bayer dithering is applied. In order to circumvent this problem, dithering is used. Not be that obvious in the picture above, there are quite a few shortcomings I willīut anyway, since then, I didn't make any progress on it. In case of a movie, it is rarely very useful. The other implemented compression mechanism was the cropping, which isīasically a way of allowing to redraw only a sub rectangle of the GIF and keep Your image has very much motion or color changes. This option is enabled by default, so you will only want to disable it in case Let's observe the effect of the transparency mechanism introduced in 2013 in
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