OpenCV – Show Video Properties with python

Hi Guyz,

In this tutorial, I will discuss the video properties and how to view the video properties of any video file using OpenCV. 

A video file contains different types of properties like width, height, frames, etc. Sometimes it is required to take out these basic video details. In order to make this work, easy OpenCV comes with built-in properties to ease out the work for developers.

video = cv.VideoCapture("video.mp4")
video.get(0)

OpenCV has a function named get(propId).
Which takes property Identifier as an argument.

There are total 22 property identifiers that OpenCV supports. 

List of Property Identifiers

One can also modify the properties of video file using set function.

This function takes two arguments.

 1. Index
 2. Property Identifier

In case, You want to modify the width and height of the video file.

video.set(3,320) # Width
video.set(4,480) # Height

Program

#import cv2 module
import cv2 as cv

#This function shows the properties of a video file
def showProperties():
    print('Current position - '+str(video.get(0)))
    print('Frames POS - '+str(video.get(1)))
    print('Ratio - '+str(video.get(2)))
    print('Width - '+str(video.get(3)))
    print('Height - '+str(video.get(4)))
    print('FPS - '+str(video.get(5)))
    print('FOURCC - '+str(video.get(6)))
    print('Frame Count - '+str(video.get(7)))
    print('Format - '+str(video.get(8)))
    print('Mode - '+str(video.get(9)))
    print('Brightness - '+str(video.get(10)))
    print('Contrast - '+str(video.get(11)))
    print('Saturation - '+str(video.get(12)))
    print('Hue - '+str(video.get(13)))
    print('Gain - '+str(video.get(14)))
    print('Exposure - '+str(video.get(15)))
    print('Convert RGB - '+str(video.get(16)))
    print('White Balance U - '+str(video.get(17)))
    print('White Balance V - '+str(video.get(18)))
    print('Rectification - '+str(video.get(19)))
    print('ISO SPEED - '+str(video.get(20)))
    print('Buffer Size - '+str(video.get(21)))
    
    
    
while True:
    ret,frame = video.read()
    cv.imshow('video',frame)
    if cv.waitKey(30) & 0xFF == ord('q'):
        #Click q key will trigger this function.
        showProperties()
        break
video.release()
cv.destroyAllWindows()

Don’t forget to check my other OpenCV Tutorials

Thanks for reading 🙂 🙂