diff --git a/Makefile b/Makefile
index 199a095..1bd1c5b 100644
--- a/Makefile
+++ b/Makefile
@@ -81,7 +81,7 @@ build: $(BUILD_DIR)/$(TARGET)
 .PHONY: run
 run: $(BUILD_DIR)/$(TARGET)
 	# $(BUILD_DIR)/$(TARGET) $(RUN_ARGS)
-	$(PROJECT_DIR)/delay.sh /dev/video0 30 640x480 25
+	$(PROJECT_DIR)/delay.sh
 
 .PHONY: submodule-init
 submodule-init:
diff --git a/delay.sh b/delay.sh
index f1de385..ecbaf0c 100755
--- a/delay.sh
+++ b/delay.sh
@@ -2,16 +2,13 @@
 
 set -e
 
-DEVICE=${1:-/dev/video0}
-DELAY=${2:-30}
-SIZE=${3:-1280x720}
-FPS=${4:-20}
+DELAY=30
 
 rm -rf /tmp/delay_stream*
 
-ffmpeg -f v4l2 -framerate $FPS -video_size $SIZE -i $DEVICE \
-  -vcodec libx264 -preset ultrafast -tune zerolatency \
+ffmpeg -f v4l2 -framerate 25 -video_size 640x480 -i /dev/video0 \
   -vf scale=720:576 \
+  -vcodec libx264 -preset ultrafast -tune zerolatency \
   -f hls -hls_time 1 -hls_list_size $((DELAY + 5)) -hls_flags delete_segments \
   /tmp/delay_stream.m3u8 &
 FFMPEG_PID=$!