Gif

ffmpeg -i brooms.mp4 -ss 0:6:11 -t 0:0:27 -pix_fmt rgb24 -r 10 brooms.gif
convert -layers Optimize brooms.gif brooms_op.gif

• http://superuser.com/questions/436056/how-can-i-get-ffmpeg-to-convert-a-mov-to-a-gif

convert \( 1.gif -coalesce \) \( 2.gif -coalesce \) a.gif