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Web streamer initial commit

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This commit is contained in:
Petr Kracik
2020-05-23 11:56:57 +02:00
parent ffa39d9b62
commit 8145b34142
2 changed files with 98 additions and 0 deletions
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templates/index.html Normal file
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<html>
<head>
<title>rPi KVM by Petrkr</title>
</head>
<body>
<h1>rPi KVM by Petrkr</h1>
<img src="{{ url_for('video_feed') }}">
</body>
</html>

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webstreaming.py Normal file
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from flask import Response
from flask import Flask
from flask import render_template
import threading
import argparse
import datetime
import imutils
import time
import cv2
outputFrame = None
lock = threading.Lock()
# initialize a flask object
app = Flask(__name__)
cap = cv2.VideoCapture(0)
cap.set(cv2.CAP_PROP_FRAME_WIDTH, 1920)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 1080)
time.sleep(1.0)
@app.route("/")
def index():
# return the rendered template
return render_template("index.html")
def detect_motion(frameCount):
global vs, outputFrame, lock
while True:
flag, frame = cap.read()
if not flag:
continue
timestamp = datetime.datetime.now()
cv2.putText(frame, timestamp.strftime(
"%A %d %B %Y %I:%M:%S%p"), (10, frame.shape[0] - 10),
cv2.FONT_HERSHEY_SIMPLEX, 0.35, (0, 0, 255), 1)
with lock:
outputFrame = frame.copy()
def generate():
global outputFrame, lock
while True:
with lock:
if outputFrame is None:
continue
(flag, encodedImage) = cv2.imencode(".jpg", outputFrame)
# ensure the frame was successfully encoded
if not flag:
continue
# yield the output frame in the byte format
yield(b'--frame\r\n' b'Content-Type: image/jpeg\r\n\r\n' +
bytearray(encodedImage) + b'\r\n')
@app.route("/video_feed")
def video_feed():
# return the response generated along with the specific media
# type (mime type)
return Response(generate(),
mimetype = "multipart/x-mixed-replace; boundary=frame")
# check to see if this is the main thread of execution
if __name__ == '__main__':
# construct the argument parser and parse command line arguments
ap = argparse.ArgumentParser()
ap.add_argument("-i", "--ip", type=str, required=True,
help="ip address of the device")
ap.add_argument("-o", "--port", type=int, required=True,
help="ephemeral port number of the server (1024 to 65535)")
ap.add_argument("-f", "--frame-count", type=int, default=32,
help="# of frames used to construct the background model")
args = vars(ap.parse_args())
# start a thread that will perform motion detection
t = threading.Thread(target=detect_motion, args=(
args["frame_count"],))
t.daemon = True
t.start()
# start the flask app
app.run(host=args["ip"], port=args["port"], debug=True,
threaded=True, use_reloader=False)