diff --git a/Makefile b/Makefile
index bf24836..f6e679d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
 default:
-	mkdir imgs
+	mkdir -p imgs
 	cargo r
-	ffmpeg -framerate 25 -i imgs/%d.png -crf 20 -pix_fmt yuv420p output.mp4
+	ffmpeg -framerate 25 -i imgs/%d.png -crf 20 -pix_fmt yuv420p output.gif