main.py

# import fastapi   this does not work

from flask import Flask, render_template, Response  # this works

import cv2
import numpy as np

app = Flask(__name__)  # calling FastAPI class from fastapi

cap = cv2.VideoCapture(0)


def gen_frames():
    while True:
        success, frame = cap.read()
        if not success:
            break
        else:
            ret, buffer = cv2.imencode(".jpg", frame)
            frame = buffer.tobytes()
            yield (b"--frame\r\n" b"Content-Type: image/jpeg\r\n\r\n" + frame + b"\r\n")


@app.route("/")
def index():
    return render_template("index.html")


@app.route("/video_feed")
def video_feed():
    return Response(gen_frames, mimetype="multipart/x-mixed-replace; boundary=frame")


if __name__ == "__main__":
    app.run(debug=True)