covert mp4 to jpeg

mp4_to_jpeg.py

import cv2
import os

print(cv2.__version__)

videoName = "n0"
cam = cv2.VideoCapture(
    "C:\\freelance\\small\\nisshin\\Mp4ToJpeg\\videos\\" + videoName + ".mp4")

print('hello')

try:

    # creating a folder named data
    if not os.path.exists('images'):
        os.makedirs('images')

# if not created then raise error
except OSError:
    print('Error: Creating directory of data')


if cam.isOpened():
    # get cam property
    width = cam.get(cv2.CAP_PROP_FRAME_WIDTH)   # float
    height = cam.get(cv2.CAP_PROP_FRAME_HEIGHT)  # float
    print(width, height)
    currentframe = 0
    seqNum = 0
    cam.set(cv2.CAP_PROP_FRAME_WIDTH, width/2)
    cam.set(cv2.CAP_PROP_FRAME_HEIGHT, height/2)

    while(True):

        # reading from frame
        ret, frame = cam.read()

        if ret:
            # if video is still left continue creating images
            if currentframe % 30 == 0:
                name = './images/' + videoName + \
                    '-seq' + str(seqNum) + '.jpg'
                # print('Creating...' + name)

                # writing the extracted images
                
                newFrame = cv2.resize(frame, (int(width/2), int(height/2)))
                cv2.imwrite(name, newFrame)
                seqNum = seqNum + 1

            # increasing counter so that it will
            # show how many frames are created
            currentframe += 1
        else:
            break

    # Release all space and windows once done
    cam.release()
    cv2.destroyAllWindows()