challenge 7: OpenCV capture camera video

Author: zhiwehu

README.md

@@ -22,4 +22,8 @@ https://github.com/zhiwehu/100_plus_Python_Projects_Challenge/blob/main/005_Chec
 
 ## 006 Arithmetic Formatter
 
-https://github.com/zhiwehu/100_plus_Python_Projects_Challenge/blob/main/006_Arithmetic_Formatter.md
+https://github.com/zhiwehu/100_plus_Python_Projects_Challenge/blob/main/006_Arithmetic_Formatter.md
+
+## 007 OpenCV Capture Camera Video
+
+https://github.com/zhiwehu/100_plus_Python_Projects_Challenge/blob/main/007_OpenCV_Capture_Camera_Video.md