Python OpenCV video.get(cv2.CAP_PROP_FPS) returns 0.0 FPS

Question

This is my video

This is the script to find fps:

import cv2
if __name__ == '__main__' :

    video = cv2.VideoCapture("test.mp4");

    # Find OpenCV version
    (major_ver, minor_ver, subminor_ver) = (cv2.__version__).split('.')

    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)

    video.release();

This is the output of the script for this video:
Frames per second using video.get(cv2.CAP_PROP_FPS) : 0.0

Why is it returning 0.0? The FPS is 14.0

Asked By: Tasos

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Source

Answer 1

Performing pip install python-opencv fixed the problem and the FPS is correctly detected.

EDIT: tested with python 3.8 and indeed it is pip install opencv-python. Cannot remember two years ago what python I was using.

EDIT November 2022: please also check Perry’s answer below, if you are using a newer Python version

Answered By: Tasos

Answer 2

The recent versions of opencv-python will give an error called AttributeError because cv2 doesn’t have any attribute named cv.

Instead use the following

import cv2

vidcap = cv2.VideoCapture('some_video.avi')
fps = vidcap.get(cv2.CAP_PROP_FPS)

print(f"{fps} frames per second")

This will give the frames per second value

Answered By: Perry

Python OpenCV video.get(cv2.CAP_PROP_FPS) returns 0.0 FPS

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