diff --git a/README.md b/README.md
index 6b2176a..1f31315 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,6 @@
 
 Test to create an image sequence player with ability to change playback speed
 
-<video width="480" height="270" controls>
+<video width="960" height="540" controls>
   <source src="./demo.mp4" type="video/mp4">
 </video>