ffmpeg script to make a qt animation out of an image sequence with alpha

bash/make_anim+.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+bg_color=#5d5d5d
+size=1920x1080
+base=smoke1
+for i;
+do ffmpeg -f lavfi -i color=c=$bg_color:s=$size -i $base.%04d.png -filter_complex "[0:v][1:v]overlay=shortest=1,format=yuv420p[out]" -map "[out]" -c:v qtrle -q 0 $base"_Animation+.mov";
+done