app.py

# https://www.youtube.com/watch?v=q8GtmrDG6uo
import cv2
import streamlit as st 
import numpy as np
import tempfile

cap = cv2.VideoCapture(0)

st.title("Video Capture")

frame_placeholder = st.empty()

stop_button_pressed = st.button("Stop")

while cap.isOpened() and not stop_button_pressed:
    ret, frame = cap.read()
    if not ret:
        st.write("the video capture has ended")
        break
    frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
    frame_placeholder.image(frame, channels = "RGB")
    if cv2.waitKey(1) & 0XFF == ord("q") or stop_button_pressed:
        break
cap.release()
cv2.destroyAllWindows