diff --git a/src/Utility/Sflux_nc/readnc2.m b/src/Utility/Sflux_nc/readnc2.m
index a8037037f..8ba053329 100644
--- a/src/Utility/Sflux_nc/readnc2.m
+++ b/src/Utility/Sflux_nc/readnc2.m
@@ -4,14 +4,19 @@
 clear all; close all;
 
 scrsz = get(0,'ScreenSize'); %screen size
+%4 parameters of position: left bottom_coord width height
 figure('Position',[1 scrsz(4)/2 scrsz(3)/2 scrsz(4)/2]);
+fname='sflux.avi';
+delete(fname);
+vidObj = VideoWriter(fname);
+vidObj.FrameRate = 10;  % Default 30; smaller ->slower
+open(vidObj);
+
 
 CB_bnd=load('CB_bnd.xy'); %load domain bnd
 
 %NARR files
 fill_in=1.e9; %junk value from nc files
-delete('sflux.avi','f');
-avi_out = avifile('sflux.avi','FPS',5);
 for i=1:10 %stack # for nc files
   char=sprintf('%3.3d',i);
   filen=strcat('sflux_air_1.',char,'.nc');
@@ -91,11 +96,12 @@
 %   Stop here for testing
 %    return;
 
-    frame = getframe(gcf);
-    avi_out=addframe(avi_out,frame);
-    clf; %clear figure
+    set(gcf,'nextplot','replacechildren');
+    currFrame = getframe(gcf);
+    writeVideo(vidObj,currFrame);
+    clf; %clear figure to avoid overlay
   end %j
 
   clear base time_narr lon_narr lat_narr uwind_narr vwind_narr pres_narr airt_narr spfh_narr;
 end %for all nc files
-avi_out=close(avi_out);
+close(vidObj);
diff --git a/src/Utility/Sflux_nc/readnc4.m b/src/Utility/Sflux_nc/readnc4.m
index e87a93d74..e17a902ec 100644
--- a/src/Utility/Sflux_nc/readnc4.m
+++ b/src/Utility/Sflux_nc/readnc4.m
@@ -28,7 +28,6 @@
 
 %Read dataset "1"
 fill_in=1.e9; %junk value from nc files
-avi_out = avifile('out.avi');
 for i=1:nfiles 
   char=sprintf('%4.4d',i);
   filen=strcat(setnm1,char,'.nc');
@@ -121,10 +120,6 @@
 %      axis([xmin-0.1 xmax+0.1 ymin-0.1 ymax+0.1]);
       axis([-81 -72.6 33.32 40.45]);
       xlabel('Lon'); ylabel('Lat');
-
-      frame = getframe(gca);
-      avi_out=addframe(avi_out,frame);
-      clf; %clear figure
     end %plot
   end %j - time steps
 
@@ -168,4 +163,3 @@
   netcdf.putVar(ncid2,hid,spfh_out);
   netcdf.close(ncid2);
 end %for all nc files
-avi_out=close(avi_out);