Computer Vision - VideoCapture()

 Introduction and Use

This is a function used to start capturing the video or starting the reading process or Simply opening the camera or start playing the video with imshow() 

for accurate : This is used to load the video in Memory

so we can read  and show the video frame by frame which is an another task 

code:

import cv2 as cv

cap  = cv.VideoCapture(0)

fourcc = cv.VideoWriter_fourcc(*'XVID')

output  = cv.VideoWriter("./output/myvideo.avi",fourcc,20.0,(640,480))

while cap.isOpened():

    ret, frame = cap.read()

    if not ret:

        break

    frame  = cv.flip(frame,0)

    cv.imshow("Video Capturing",frame)

    output.write(frame)

    if cv.waitKey(20) & 0xFF == ord('x'):

        print('Video saved Successfully in current Directory')

        break

#Now most important part releasing all the resourses to prevent the conflict between the resourses

output.release()

cap.release()

cv.destroyAllWindows()

this is the program where the fucntion have value 0 as argument and this is the camera numbers

while u can enter 0 to the number of camera connected to yr system and work on that

or simply can enter the path to the prerecorded video file in diffrent diffrent formats

like mp4,avi,mp42,osd etc