working, but stops part way thru

run.sh

@@ -1,44 +1,25 @@
 #!/bin/bash
 
-# Tehcnically, this works. However, the static needs to scan from one side to the
-# other so you can see the difference in the two
-
-X=100
-Y=50
-FRAMES=10
+X=200
+Y=70
 
 # Create the mask
 convert \
 	-background none -fill black \
-	-pointsize 24 -size ${X}x${Y} -gravity center \
+	-pointsize 60 -size ${X}x${Y} -gravity center \
 	label:TEST1 mask.png
 
-# create pictures of static
-mkdir -p back fore out
-for i in $(seq 1 $FRAMES); do
-	convert -size ${X}x${Y} canvas: +noise Random -monochrome back/${i}.png
-	# Generate image of static, then mask it out using the mask.png
-	convert -size ${X}x${Y} canvas: +noise Random -monochrome mask.png -compose CopyOpacity -composite fore/${i}.png
-done
+# Create large static image
+convert -size 2000x${Y} canvas: +noise Random -monochrome -alpha off background.png
 
-for i in $(seq 1 $FRAMES); do
-	# Layer the two images
-	convert back/$i.png fore/1.png -gravity center -background None -layers Flatten out/$i.png
-done
-
-
-# create gif
-# convert -delay 1 -loop 0 out/* out.gif
-
-# try video
-convert -size 1920x50 canvas: +noise Random -monochrome -alpha off background.png
-
-ffmpeg -y -framerate 30 -loop true -t 10 -i background.png -i mask.png -i background.png \
+# Create video
+ffmpeg -y -framerate 60 -loop true -t 10 -i background.png -i mask.png \
 	-filter_complex "
-		[0]crop=x=n:w=${X}:h=${Y}[bg];
-		[2]crop=x=iw-n:w=${X}:h=${Y}[fg];
-		[1]alphaextract[mask];
-		[fg][mask]alphamerge[top];
-		[bg][top]overlay=x=0:y=0"\
-	-c:v libx264 out.mp4
+		[0] crop=x=n:w=${X}:h=${Y} [bg];
+		[0] crop=x=out_w-n:w=${X}:h=${Y} [fg];
+		[1] alphaextract [mask];
+		[fg][mask] alphamerge [text];
+		[bg][text] overlay"\
+	-c:v libx264 -crf 10 -an out.mp4
 
+# rm *.png