python opencv PyQt5

import cv2
import numpy as np
import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
import datetime


class Video():
def __init__(self, capture):
self.capture = capture
capture.set(3,960) # set Width
capture.set(4,2560) # set Height
self.currentFrame = np.array([])

def captureFrame(self):
ret, readFrame = self.capture.read()
return readFrame

def captureNextFrame(self):
ret, readFrame = self.capture.read()
if (ret == True):

readFrame=cv2.resize(readFrame, (int(960 / 4), int(2560 / 4)))

#cv2.waitKey(1)
self.currentFrame = cv2.cvtColor(readFrame, cv2.COLOR_BGR2RGB)

def convertFrame(self):
try:
height, width = self.currentFrame.shape[:2]
#print(height, width)
img = QImage(self.currentFrame, width, height, QImage.Format_RGB888)
img = QPixmap.fromImage(img)
#self.previousFrame = self.currentFrame
return img
except:
return None


class win(QMainWindow):
def __init__(self, parent=None):
super(win,self).__init__()
self.setGeometry(250, 80, 960, 2560)
self.setWindowTitle('camera')
self.video = Video(cv2.VideoCapture(1))
print(self.video)
self._timer = QTimer(self)
self._timer.timeout.connect(self.play)
self._timer.start(2)
self.update()
self.videoFrame = QLabel('VideoCapture')
self.videoFrame.setAlignment(Qt.AlignCenter)
self.setCentralWidget(self.videoFrame)
self.ret, self.capturedFrame = self.video.capture.read()

def play(self):
try:
nowTime=datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
print(nowTime)
self.video.captureNextFrame()
self.videoFrame.setPixmap(self.video.convertFrame())
self.videoFrame.setScaledContents(True)
except TypeError:
print('No Frame')


if __name__ == '__main__':
app = QApplication(sys.argv)
win = win()
win.show()
sys.exit(app.exec_())