Add new media files: PNG thumbnail and MP4 videos

- Added a PNG thumbnail image (1757455624790.png) to the thumbnails directory.
- Added two MP4 video files (1757455619060.mp4 and 1757455624616.mp4) to the videos directory.

public/index.html

@@ -9,7 +9,7 @@
 
   <!-- Upload button -->
   <p><a href="upload.html"><button>Upload Video</button></a></p>
-  <P>   <a href="/public/login.html"><button>login</button></a></P>
+  <P>   <a href="login.html"><button>login</button></a></P>
 
   <ul id="videoList"></ul>
 </body>