Update index.md

Author: Mingrui-Yu

docs/index.md

@@ -1,3 +1,8 @@
 # Global Model Learning for Large Deformation Control of Elastic Deformable Linear Objects: An Efficient and Adaptive Approach
 
-The paper is under review.
+The paper is under review.
+
+<p align="center">
+<iframe width="640" height="360" src="https://www.youtube.com/embed/CpmZi8a7YyY" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+</p>
+