update: complete dataset card

README.md

@@ -113,8 +113,9 @@ Display is a snapshot from our motion capture studio showing a subject performin
 
 Watch a short demonstration of the motion capture data in action:
 
-<video width="100%" controls loop muted autoplay>
-  <source src="assets/jibengongjia.mp4" type="video/mp4">
+<img src="https://github.com/ChingmuData/CMRD/tree/main/assets/logo.png"></img>
+
+<video src="https://github.com/ChingmuData/CMRD/tree/main/assets/jibengongjia.mp4" controls autoplay muted loop>
   Your browser does not support the video tag.
 </video>