Code Editor for app.py

import streamlit as st
import cv2
import numpy as np

st.title("Video Stream Sharpening")
st.write("Enter a URL to a video stream to apply sharpening filter")

url = st.text_input("Video URL")

if url:
    try:
        # Create a sharpening kernel
        kernel = np.array([[-1,-1,-1],
                         [-1, 9,-1],
                         [-1,-1,-1]])

        # Open video stream
        cap = cv2.VideoCapture(url)

        # Create a placeholder for the video frame
        frame_placeholder = st.empty()

        while cap.isOpened():
            ret, frame = cap.read()
            if not ret:
                st.error("Can't receive frame from stream. Exiting...")
                break

            # Convert frame from BGR to RGB
            frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
            
            # Apply sharpening
            sharpened = cv2.filter2D(frame, -1, kernel)
            
            # Display the frame
            frame_placeholder.image(sharpened, channels="RGB", use_column_width=True)

        cap.release()

    except Exception as e:
        st.error(f"Error processing video stream: {str(e)}")
        
st.write("""
### Instructions
1. Enter a URL to a video stream (e.g., RTSP, HTTP stream)
2. The app will apply a sharpening filter to each frame
3. Press Stop button to end the stream
""")