webstream and barcode recognition running in parallel

website/app.py

@@ -1,14 +1,27 @@
 from flask import Flask, render_template, Response
 import cv2
+import imutils
+from imutils.video import VideoStream
+from pyzbar import pyzbar
+import time
 
 app = Flask(__name__)
 
+vs = VideoStream(src=0).start()
+time.sleep(2)
+frame = None
+
 def stream(camera_index):
-    cam = cv2.VideoCapture(camera_index)
+    global frame
     while True:
-        _, frame = cam.read()
-        frame = cv2.resize(frame,(400, 240))
-        ret, jpg = cv2.imencode('.jpg', frame)
+        raw_frame = vs.read()
+        stream_frame = imutils.resize(raw_frame, width=400)
+        decode_frame = imutils.resize(raw_frame, width=800)
+        barcodes = pyzbar.decode(decode_frame)
+        for barcode in barcodes:
+            barcode_data = barcode.data.decode("utf-8")
+            print(barcode_data)
+        ret, jpg = cv2.imencode('.jpg', stream_frame)
         jpg2bytes = jpg.tobytes()
         yield b'--frame\r\nContent-Type: image/jpeg\r\n\r\n' + jpg2bytes + b'\r\n\r\n'
 
@@ -21,4 +34,4 @@ def stream_fedd():
     return Response(stream(0), mimetype='multipart/x-mixed-replace; boundary=frame')
 
 if __name__ == '__main__':
-    app.run(debug=True, port=5000, host='0.0.0.0')
+    app.run(debug=False, port=5000, host='0.0.0.0')