Update README.md

Author: saptajitbanerjee

README.md

@@ -28,7 +28,10 @@ The AWS IoT Weather Monitoring System is designed to collect and visualize real-
 
 - **Web Application:** Offers real-time weather data visualization through interactive line charts and ensures secure user access through Passport.js authentication.
 
-![Project_Demo](https://github.com/saptajitbanerjee/AWS-IoT-Weather-Monitoring-System/blob/main/video.mp4)
+<video width="320" height="240" controls>
+ <source src="./video.mp4" type="video/mp4">
+ Your browser does not support the video tag.
+</video>
 
 ## Hardware and Software Used