gif

kohler/gifsicle
- GPL 2.0, C
- create, manipulate, and optimize GIF
- www.lcdf.org/gifsicle/man.html

flag	default	value
-O,--optimize=level	1	1,2,3 - 推荐 2

bash

brew install gifsicle # macOS

# video to gif
ffmpeg -i in.mov -s 600x400 -pix_fmt rgb24 -r 10 -f gif - | gifsicle -O3 > out.gif

# keep scale
ffmpeg -i in.mov -pix_fmt rgb24 -r 18 -f gif - | gifsicle --optimize=3 --delay=3 > out.gif

# 优化现有 gif
gifsicle in.gif --optimize=3 > out.gif

gifsicle -I "#0" "#1" < in.gif # 输出帧信息

关联信息

参考资料