Live stream camera feed

cam_app.py

import cv2
import flask

app = flask.Flask("CamApp")

def gen():
    cap = cv2.VideoCapture(0)
    while True:
        _, frame = cap.read()
        yield (b'--frame\r\n'
               b'Content-Type: image/jpeg\r\n\r\n' + cv2.imencode('.jpg', frame)[1].tostring() + b'\r\n')

@app.route('/')
def feed():
    return flask.Response(gen(), mimetype='multipart/x-mixed-replace; boundary=frame')

if __name__ == '__main__':
    app.run(host='0.0.0.0', port = 8000, debug=True)

stream_screen.py

from flask import Flask, Response
import subprocess,random,os,time, cv2

cmd = lambda n: "screencapture -f temp/{}.jpg".format(n)
cmdcv = "screencapture -f temp/screen.jpg"

app = Flask("Test")

def fun():
  while True:
    subprocess.Popen(cmdcv.split(), subprocess.PIPE)
    frame = cv2.imread('temp/screen.jpg')
    yield (b'--frame\r\n' b'Content-Type: image/jpeg\r\n\r\n' + cv2.imencode('.jpg', frame)[1].tostring() + b'\r\n')

def gun():
  while True:
    n = random.randint(1,10000)
    subprocess.Popen(cmd(n).split(), subprocess.PIPE)
    time.sleep(0.25)
    # print(os.path.isfile('temp/{}.jpg'.format(n)), 'temp/{}.jpg'.format(n))
    yield b'--frame\r\n' b'Content-Type: image/jpeg\r\n\r\n' + open('temp/{}.jpg'.format(n),'rb').read()  + b'\r\n'

@app.route('/cv2')
def feed():
  return Response(fun(), mimetype='multipart/x-mixed-replace; boundary=frame')

@app.route('/')
def geed():
  return Response(gun(), mimetype='multipart/x-mixed-replace; boundary=frame')

@app.route('/pic')
def pic():
  n='screen'
  bcd = b'--frame\r\n' b'Content-Type: image/jpeg\r\n\r\n' + open('temp/{}.jpg'.format(n),'rb').read()  + b'\r\n'
  return Response(bcd,mimetype='multipart/x-mixed-replace; boundary=frame')

app.run('0.0.0.0',8000,debug=True)

To expose publicly, use a free port forwarding service such as ngrok