is it possible to use a RSTP camera instead of the piCam

[masterchop]

I wonder if we could use network camera to process the computer vision from the Pi

[PietjeNL]

Jeah that would be a great example to add to it. Have a old dome camera laying around that gives to much false positives.

[masterchop]

i have been trying to port this code but i am not sure how to modify from picam to rstp.
I can do RSTP on python with opencv but when i run face recognition or any other it goes super slow i just cant find out what he did on this one to make that fast. i am new to python :(

[masterchop]

I tried to port this code into the camera.py code unsuccesfully:

`class ipCamera(object):

def __init__(self, url, user=None, password=None):
    self.url = url
    auth_encoded = base64.encodestring('%s:%s' % (user, password))[:-1]

    self.req = urllib2.Request(self.url)
    self.req.add_header('Authorization', 'Basic %s' % auth_encoded)

def get_frame(self):
    response = urllib2.urlopen(self.req)
    img_array = np.asarray(bytearray(response.read()), dtype=np.uint8)
    frame = cv2.imdecode(img_array, 1)
    return frame`

[masterchop]

i had to remove some stuff of the code but got it. Thanks

[TristanMW]

@masterchop Please share your code. I have a IP camera and plan to use the rtsp stream aswell

Thanks

[masterchop]

Oh wow that was 2 years ago, I'll have to dig on my stuff to see If i can find it.

[TristanMW]

haha thanks

[masterchop]

This what i end up using:

`import cv2
import traceback
from threading import Thread, Lock

class WebcamVideoStream :

def __init__(self, src) :
    self.daemon = True  # Not sure if i shuld remove this one.https://stackoverflow.com/questions/12493467/python-threading-threads-do-not-close
    self.stream = cv2.VideoCapture(src)
    #self.stream.set(cv2.cv.CV_CAP_PROP_FRAME_WIDTH, width)
    #self.stream.set(cv2.cv.CV_CAP_PROP_FRAME_HEIGHT, height)
    (self.grabbed, self.frame) = self.stream.read()
    self.started = False
    self.read_lock = Lock()

def start(self) :
    if self.started :
        print("[INFO] already started!!")
        return None
    self.started = True
    self.thread = Thread(target=self.update, args=())
    self.thread.start()
    return self

def update(self) :
    while self.started :
        (grabbed, frame) = self.stream.read()
        self.read_lock.acquire()
        self.grabbed, self.frame = grabbed, frame
        self.read_lock.release()

def read(self) :
    try:
       self.read_lock.acquire()
       frame = self.frame.copy()
       self.read_lock.release()
       return frame
    except Exception as e:
       self.read_lock.release() # para ver si quitamos el lock.
       print("[ERROR] Camera Disconnected")
       print(e)# this is the reason why it fails could be the lock or frame.
       return None

#added to send the emails.
def get_frame(self):
frame = self.frame.copy()
ret, jpeg = cv2.imencode('.jpg', frame)
return jpeg.tobytes()

def stop(self) :
    try:
       self.started = False
       #self.thread.join()
    except Exception as e:
       print("[ERROR: Stop CameraClass Failed..]")

def __exit__(self, exc_type, exc_value, traceback) :
    self.stream.release()`

[TristanMW]

Thank You. Will test it