diff --git a/README.md b/README.md
index 65a0041..39dfd2b 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ Commands:
 
 ### Demo
 
-<video src='./doc/output.webm' width="512" />
+<video width="512" height="376" controls><source src="./doc/output.webm" type="video/webm" /></video>
 
 ## Configuration