Python | Play a video using OpenCV
OpenCV (Open Source Computer Vision) is a computer vision library that contains various functions to perform operations on Images or videos. OpenCV library can be used to perform multiple operations on videos.
Let’s see how to play a video using the OpenCV Python.
To capture a video, we need to create a VideoCapture object. VideoCapture have the device index or the name of a video file. Device index is just the number to specify which camera. If we pass 0 then it is for first camera, 1 for second camera so on. We capture the video frame by frame.
Syntax :
cv2.VideoCapture(0): Means first camera or webcam.
cv2.VideoCapture(1): Means second camera or webcam.
cv2.VideoCapture("file name.mp4"): Means video fileBelow is the implementation:
# importing librariesimport cv2import numpy as np # Create a VideoCapture object and read from input filecap = cv2.VideoCapture('tree.mp4') # Check if camera opened successfullyif (cap.isOpened()== False): print("Error opening video file") # Read until video is completedwhile(cap.isOpened()): # Capture frame-by-frame ret, frame = cap.read() if ret == True: # Display the resulting frame cv2.imshow('Frame', frame) # Press Q on keyboard to exit if cv2.waitKey(25) & 0xFF == ord('q'): break # Break the loop else: break # When everything done, release # the video capture objectcap.release() # Closes all the framescv2.destroyAllWindows() |
Note : Video file should have in same directory where program is executed.
Output:
Sample Frame of video :
Related Article : How to play video in reverse mode.
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