In this tutorial, I will show you how to extract and save frames from a video file. Prerequisites are Chapter 1 and 2.
Steps:
- Open the Video file or camera using cv2.VideoCapture()
- Read frame by frame
- Save each frame using cv2.imwrite()
- Release the VideoCapture and destroy all windows
Now, Let’s code
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import cv2 # Opens the Video file cap= cv2.VideoCapture('C:/New/Videos/Play.mp4') i=0 while(cap.isOpened()): ret, frame = cap.read() if ret == False: break cv2.imwrite('kang'+str(i)+'.jpg',frame) i+=1 cap.release() cv2.destroyAllWindows() |
If you don’t have any video, no need to worry. Open the camera instead of the file using cv2.VideoCapture(0) and start extracting frames.
Use: We can perform a number of operations on these frames like crop, flip, reverse etc. save them into a list and iterate over them to get cropped/flipped/reversed video. (See How you can make Video from images)
Hope you enjoy reading. If you have any doubt/suggestion please feel free to ask and I will do my best to help or improve myself. Good-bye until next time