How can I use OpenCV for video analysis?

How can I use OpenCV for video analysis?

You can use OpenCV to process video frames, detect objects, and analyze motion. What specific analysis are you interested in?

I want to detect moving objects in a video stream.

You can use background subtraction methods in OpenCV, like MOG2 or KNN, to detect moving objects. Would you like a code example?

Yes, please provide a code example for MOG2.

Here's a simple example:

import cv2

cap = cv2.VideoCapture('video.mp4')
fgbg = cv2.createBackgroundSubtractorMOG2()

while True:
    ret, frame = cap.read()
    if not ret:
        break
    fgmask = fgbg.apply(frame)
    cv2.imshow('Frame', frame)
    cv2.imshow('FG Mask', fgmask)
    if cv2.waitKey(30) & 0xFF == 27:
        break

cap.release()
cv2.destroyAllWindows()

This will show the original video and the foreground mask.