python requests mjpeg url

edit

your bytearray(jpg)) is something else than expected (probably an error msg / tuple)

please check, and refrain from using shortcuts like x(y(z(a(b(c()))))).

(do one step at a time, so you can debug it properly)

My code this,give me that after a while writing error.I run debug mode but I don't find error

r = requests.get('url', auth=HTTPDigestAuth('usernam', 'pass'), stream=True)               
if(r.status_code == 200):
   bytes=b'' 
   for chunk in r.iter_content(chunk_size=1024):
    bytes += chunk
    finda = bytes.find(b'\xff\xd8')
    findb = bytes.find(b'\xff\xd9')
    if finda != -1 and findb != -1:
      jpg = bytes[finda:findb+2]
      bytes = bytes[findb+2:]
      frame = cv2.imdecode(np.frombuffer(jpg, dtype=np.uint8), cv2.IMREAD_COLOR)
      if frame is not None:
         cv2.imshow('Live',frame)
         if cv2.waitKey(1) == 27:
           exit(0)

what is

 bytes = bytes[findb+2:]

needed for ?