get_fps.py

# -*- coding: utf-8 -*-
"""
Created on Wed Oct 26 19:07:41 2022

@author: asaga
"""

#!/usr/bin/env python
 
import cv2
import time
 
if __name__ == '__main__' :
 
    # Start default camera
    video = cv2.VideoCapture('video_test.mp4');
 
    # Find OpenCV version
    (major_ver, minor_ver, subminor_ver) = (cv2.__version__).split('.')
 
    # With webcam get(CV_CAP_PROP_FPS) does not work.
    # Let's see for ourselves.
 
    if int(major_ver)  < 3 :
        fps = video.get(cv2.cv.CV_CAP_PROP_FPS)
        print("Frames per second using video.get(cv2.cv.CV_CAP_PROP_FPS): {0}".format(fps))
    else :
        fps = video.get(cv2.CAP_PROP_FPS)
        print("Frames per second using video.get(cv2.CAP_PROP_FPS) : {0}".format(fps))
 
    # Number of frames to capture
    num_frames = 120;
 
    print("Capturing {0} frames".format(num_frames))
 
    # Start time
    start = time.time()
 
    # Grab a few frames
    for i in range(0, num_frames) :
        ret, frame = video.read()
 
    # End time
    end = time.time()
 
    # Time elapsed
    seconds = end - start
    print ("Time taken : {0} seconds".format(seconds))
 
    # Calculate frames per second
    fps  = num_frames / seconds
    print("Estimated frames per second : {0}".format(fps))
 
    # Release video
    video.release()