hello3.py

from flask import Flask, render_template, Response
import cv2

app = Flask(__name__)

def gstreamer_pipeline(capture_width=640, capture_height=480, display_width=640, display_height=480, framerate=30, flip_method=0):
    return ('nvarguscamerasrc ! '
            'video/x-raw(memory:NVMM), '
            'width=(int)%d, height=(int)%d, '
            'format=(string)NV12, framerate=(fraction)%d/1 ! '
            'nvvidconv flip-method=%d ! '
            'video/x-raw, width=(int)%d, height=(int)%d, format=(string)BGRx ! '
            'videoconvert ! '
            'video/x-raw, format=(string)BGR ! '
            'appsink' % (capture_width, capture_height, framerate, flip_method, display_width, display_height))

camera = cv2.VideoCapture(gstreamer_pipeline(flip_method=0), cv2.CAP_GSTREAMER)




def gen_frames():
    while True:
        success, frame = camera.read()
        print(success)
        print(frame)
        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')
        yield frame

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

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8080, threaded=True ,debug=False)