Adding gifenc.

gifenc

+#!/bin/sh
+
+# Compiled from: http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html
+
+palette="./palette.png"
+filters="fps=15,scale=128:-1:flags=lanczos"
+ffmpeg -i $1 -vf palettegen palette.png
+ffmpeg -v warning -i $1 -vf "$filters,palettegen" -y $palette
+ffmpeg -v warning -i $1 -i $palette -lavfi "$filters [x]; [x][1:v] 
+paletteuse" -y $2
+rm $palette
+