Error when using Streamlit with OpenCV

šŸŽˆ Using Streamlit
1

Summary

I have an issue with accessing the video stream. I get the error as
[ WARN:0@11.019] global cap_msmf.cpp:471 anonymous-namespace'::SourceReaderCB::OnReadSample videoio(MSMF): OnReadSample() is called with error status: -1072875772 [ WARN:0@11.064] global cap_msmf.cpp:483 anonymous-namespaceā€™::SourceReaderCB::OnReadSample videoio(MSMF): async ReadSample() call is failed with error status: -1072875772
[ WARN:1@11.108] global cap_msmf.cpp:1759 CvCapture_MSMF::grabFrame videoio(MSMF): canā€™t grab frame. Error: -1072875772

My camera is working fine as well

Steps to reproduce

Code snippet:

import streamlit as st
import cv2

cap = cv2.VideoCapture(0)

while True:
    ret, frame = cap.read()

    if not ret:
        break

    st.image(frame, channels="BGR")

    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()

If applicable, please provide the steps we should take to reproduce the error or specified behavior.

Expected behavior:
The expected behavior is to create a Streamlit application that accesses the video stream from the default camera using OpenCV (cv2 ) and displays the video feed within the Streamlit app.

Explain what you expect to happen when you run the code above.

Actual behavior:
Nothing is displayed on the screen in streamlit app

Explain the undesired behavior or error you see when you run the code above.
If youā€™re seeing an error message, share the full contents of the error message here.

Debug info

  • Streamlit version: (get it with $ streamlit version) 1.24.1
  • Python version: (get it with $ python --version) 3.10.5
  • Using Conda? PipEnv? PyEnv? Pex?
  • OS version: windows 11
  • Browser version:

Requirements file

Using Conda? PipEnv? PyEnv? Pex? Share the contents of your requirements file here.
Not sure what a requirements file is? Check out this doc and add a requirements file to your app.

Links

  • Link to your GitHub repo:
  • Link to your deployed app:

Additional information

If needed, add any other context about the problem here.

2

Hey @Lakshmi_Shree_A,

Do you see this same error when youā€™re only using OpenCV (without Streamlit)?