simgt/app.py

## app.py
import threading
import time

import flask
import cv2


class CameraThread(threading.Thread):
    def __init__(self):
        super().__init__()
        self.capture = cv2.VideoCapture(0)
        self.condition = threading.Condition()

    def iter_frames(self):
        while True:
            with self.condition:
                self.condition.wait()
                frame = self.frame
            yield (b'--FRAME\r\n'
                   b'Content-Type: image/jpeg\r\n\r\n' + self.frame + b'\r\n')

    def run(self):
        while True:
            __, frame = self.capture.read()
            __, img = cv2.imencode('.jpg', frame)
            with self.condition:
                self.frame = img.tobytes()
                self.condition.notify_all()
            time.sleep(0)


app = flask.Flask(__name__)
camera_thread = CameraThread()


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


@app.route("/stream")
def stream():
    return flask.Response(camera_thread.iter_frames(),
                          mimetype='multipart/x-mixed-replace; boundary=FRAME')


if __name__ == '__main__':
    camera_thread.start()
    app.run(host='0.0.0.0', threaded=True, debug=True)

## index.html
<html>
  <head>
    <title>MJPEG streaming</title>
  </head>
  <body>
    <img src="stream" width="800" height="600" />
  </body>
</html>
	import threading
	import time

	import flask
	import cv2


	class CameraThread(threading.Thread):
	def __init__(self):
	super().__init__()
	self.capture = cv2.VideoCapture(0)
	self.condition = threading.Condition()

	def iter_frames(self):
	while True:
	with self.condition:
	self.condition.wait()
	frame = self.frame
	yield (b'--FRAME\r\n'
	b'Content-Type: image/jpeg\r\n\r\n' + self.frame + b'\r\n')

	def run(self):
	while True:
	__, frame = self.capture.read()
	__, img = cv2.imencode('.jpg', frame)
	with self.condition:
	self.frame = img.tobytes()
	self.condition.notify_all()
	time.sleep(0)


	app = flask.Flask(__name__)
	camera_thread = CameraThread()


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


	@app.route("/stream")
	def stream():
	return flask.Response(camera_thread.iter_frames(),
	mimetype='multipart/x-mixed-replace; boundary=FRAME')


	if __name__ == '__main__':
	camera_thread.start()
	app.run(host='0.0.0.0', threaded=True, debug=True)
	<html>
	<head>
	<title>MJPEG streaming</title>
	</head>
	<body>
	<img src="stream" width="800" height="600" />
	</body>
	</html>