app.py

from flask import Flask, render_template, Response  
import cam
import os
import cv2

app = Flask(__name__,template_folder='templates')

overlay_image=[]
header_img = "Images"
header_img_list = os.listdir(header_img)
for i in header_img_list:
    image = cv2.imread(f'{header_img}/{i}')
    overlay_image.append(image)


@app.route('/')
def index():
    return render_template('index.html')
def gen():
    cam1 = cam.VideoCamera(overlay_image)

    while True:
        frame = cam1.get_frame(overlay_image)
        yield (b'--frame\r\n'
               b'Content-Type: image/jpeg\r\n\r\n' + frame + b'\r\n\r\n')

@app.route('/video_feed')
def video_feed():
    return Response(gen(),
                    mimetype='multipart/x-mixed-replace; boundary=frame')

if __name__ == '__main__':
    app.run()
    #192.168.0.105