diff --git a/change-length-video-HWACCEL.sh b/change-length-video-HWACCEL.sh
index 10016e7..9d97a95 100755
--- a/change-length-video-HWACCEL.sh
+++ b/change-length-video-HWACCEL.sh
@@ -51,7 +51,7 @@ slow () {
   echo "running with filter $FILTER";
 
   if [ "$IS_MAC" -eq 1 ]; then
-    ffmpeg -c:v h264_videotoolbox -i "$IN_FILE" -b:v $BITRATE -filter_complex "$FILTER" "${OPTS[@]}" -c:v h264_vaapi "$OUT_FILE";  
+    ffmpeg -hwaccel videotoolbox -i "$IN_FILE" -b:v $BITRATE -filter_complex "$FILTER" "${OPTS[@]}" -c:v h264_videotoolbox "$OUT_FILE";
   else
     ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -vaapi_device /dev/dri/renderD128 -i "$IN_FILE" -b:v $BITRATE -filter_complex "$FILTER" "${OPTS[@]}" -c:v h264_vaapi "$OUT_FILE";
   fi;