diff --git a/movie.sh.in b/movie.sh.in
index fa9242f..648092b 100755
--- a/movie.sh.in
+++ b/movie.sh.in
@@ -13,6 +13,7 @@ SCRIPT_DIR=$(cd $(dirname "${BASH_SOURCE[0]}") && pwd)
 GIGA_DIR="$2"
 DEST_NAME="$3"
 FPS="$4"
+MODE="$5"
 
 echo script_dir $SCRIPT_DIR 1>&2
 echo GIGA_DIR $GIGA_DIR 1>&2
@@ -28,7 +29,7 @@ elif [ "-$1" == "-stop" ]; then
 	mkdir $GIGA_DIR/sm
 	kill `cat $2/audio.pid`
 	cd $GIGA_DIR
-	@LIBEXECDIR@/mpegize.py convert $GIGA_DIR/ $DEST_NAME $FPS
+	@LIBEXECDIR@/mpegize.py convert $GIGA_DIR/ $DEST_NAME $FPS $MODE
 	rm -r $GIGA_DIR
 	echo Message: Rec
 else
diff --git a/mpegize.py b/mpegize.py
index c249fa4..41b7f3a 100755
--- a/mpegize.py
+++ b/mpegize.py
@@ -396,7 +396,7 @@ class Mpegize:
         return s[2], s[1], i
 
     def help(m):
-        print("mpegize command base-dir destination-movie fps")
+        print("mpegize command base-dir destination-movie fps dng|grw")
 
     def run(m, argv):
         if len(argv) > 2:
@@ -411,7 +411,7 @@ class Mpegize:
                 print("Phase 2: mpegize -- ", argv[3])
                 print("Message: enc")
                 sys.stdout.flush()
-                gst_convert(m.base, argv[3], True)
+                gst_convert(m.base, argv[3], argv[4]=="dng")
                 return
             if mode == "gaps":
                 print("Video gaps")
diff --git a/src/process_pipeline.c b/src/process_pipeline.c
index 3f5a314..21fdfb0 100644
--- a/src/process_pipeline.c
+++ b/src/process_pipeline.c
@@ -687,6 +687,20 @@ static void
 spawn_movie(char *cmd)
 {
         g_autoptr(GError) error = NULL;
+	char *mode;
+
+	switch (state_proc.mode->v4l_pixfmt) {
+		case V4L2_PIX_FMT_UYVY:
+		case V4L2_PIX_FMT_YUYV:
+		case V4L2_PIX_FMT_YVYU:
+		case V4L2_PIX_FMT_VYUY:
+			mode = "grw";
+			break;
+		default:
+			mode = "dng";
+			break;
+	}
+
         GSubprocess *proc = g_subprocess_new(G_SUBPROCESS_FLAGS_STDOUT_PIPE,
                                              &error,
                                              movie_script,
@@ -694,6 +708,7 @@ spawn_movie(char *cmd)
                                              burst_dir,
                                              movie_fname,
 					     "305",
+					     mode,
                                              NULL);
 
         if (!proc) {