diff --git a/wtfitpoc b/wtfitpoc
index b3d7120..cfc90c9 100755
--- a/wtfitpoc
+++ b/wtfitpoc
@@ -6,7 +6,8 @@ set -e
 IMG="$1"
 [ -z "$IMG" ] && { echo "Usage: $0 overlay.png"; exit 1; }
 
-ffmpeg -y -i base.mp4 -i "$IMG" \
-	-filter_complex "[1:v]scale=1059:529:force_original_aspect_ratio=decrease[ov];[0:v][ov]overlay=306:540-h:enable='gte(n\,159)'" \
+ffmpeg -y -i base.mp4 -stream_loop -1 -i "$IMG" \
+	-filter_complex "[1:v]scale=1059:529:force_original_aspect_ratio=decrease,format=rgba[ov];[0:v][ov]overlay=306:540-h:enable='gte(n\,159)'" \
 	-af loudnorm=I=-16:TP=-1.5:LRA=11 \
-	-c:v libx264 -c:a aac -b:a 192k out.mp4
+	-c:v libx264 -pix_fmt yuv420p -c:a aac -b:a 192k \
+	-shortest out.mp4