Add https://youtu.be/rCggzXRRSRo to Speed Estimation Docs (#8577)

Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>

docs/en/guides/speed-estimation.md

@@ -10,6 +10,17 @@ keywords: Ultralytics, YOLOv8, Object Detection, Speed Estimation, Object Tracki
 
 Speed estimation is the process of calculating the rate of movement of an object within a given context, often employed in computer vision applications. Using [Ultralytics YOLOv8](https://github.com/ultralytics/ultralytics/) you can now calculate the speed of object using [object tracking](https://docs.ultralytics.com/modes/track/) alongside distance and time data, crucial for tasks like traffic and surveillance. The accuracy of speed estimation directly influences the efficiency and reliability of various applications, making it a key component in the advancement of intelligent systems and real-time decision-making processes.
 
+<p align="center">
+  <br>
+  <iframe loading="lazy" width="720" height="405" src="https://www.youtube.com/embed/rCggzXRRSRo"
+    title="YouTube video player" frameborder="0"
+    allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
+    allowfullscreen>
+  </iframe>
+  <br>
+  <strong>Watch:</strong> Speed Estimation using Ultralytics YOLOv8
+</p>
+
 ## Advantages of Speed Estimation?
 
 - **Efficient Traffic Control:** Accurate speed estimation aids in managing traffic flow, enhancing safety, and reducing congestion on roadways.