Get frame to Hikvision IP Camera in python

Question

I have the next Hikvision IP Camera http://www.hikvision.com/es/Products_accessries_161_i11969.html I configured it in my local network and I have connection with the browser and I can see the camera working perfectly. I have searched in different post to get frame in cameras like this, but I can't do it. Here I put the code that I used to try it and the response. I want to obtain a frame and save it in my destock to processed after.

import cv2
import requests
import numpy as np
import urllib
import hikvision.api
import requests
import shutil

#Donwload from: https://github.com/fbradyirl/hikvision/archive/master.zip

hik_camera = hikvision.api.CreateDevice('192.168.1.64', username='admin', password=contrasenia)
"""
INFO:hikvision.api:Initialising new hikvision camera client
INFO:hikvision.api:motion_url: http://192.168.1.64/MotionDetection/1
INFO:hikvision.api:ElementTree.register_namespace: http://www.hikvision.com/ver10/XMLSchema
INFO:hikvision.api:Going to probe device to test connection
INFO:hikvision.api:url: http://192.168.1.64/System/deviceInfo
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): 192.168.1.64
DEBUG:requests.packages.urllib3.connectionpool:"GET /System/deviceInfo HTTP/1.1" 200 696
DEBUG:hikvision.api:response: <Response [200]>
DEBUG:hikvision.api:status_code 200
DEBUG:hikvision.api:element_to_query: .//{http://www.hikvision.com/ver10/XMLSchema}firmwareVersion result: <Element '{http://www.hikvision.com/ver10/XMLSchema}firmwareVersion' at 0x7fb090b76cc8>
INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): 192.168.1.64
DEBUG:requests.packages.urllib3.connectionpool:"GET /MotionDetection/1 HTTP/1.1" 200 407
DEBUG:hikvision.api:Response: <?xml version="1.0" encoding="UTF-8"?>
<MotionDetection version="1.0" xmlns="http://www.hikvision.com/ver10/XMLSchema">
<id>1</id>
<enabled>false</enabled>
<regionType>grid</regionType>
<Grid>
<rowGranularity>18</rowGranularity>
<columnGranularity>22</columnGranularity>
</Grid>
<MotionDetectionRegionList>
<sensitivityLevel>0</sensitivityLevel>
</MotionDetectionRegionList>
</MotionDetection>

INFO:hikvision.api:Current motion detection state? enabled: false
WARNING:hikvision.api:sensitivityLevel is 0.
INFO:hikvision.api:sensitivityLevel now set to 1
INFO:hikvision.api:Connected OK!
INFO:hikvision.api:Camera firmaward version: V5.4.3
INFO:hikvision.api:Motion Detection enabled: False
"""

#The method:
"""
hik_camera.__class__(                    hik_camera.__setattr__(
hik_camera.__delattr__(                  hik_camera.__sizeof__(
hik_camera.__dict__                      hik_camera.__str__(
hik_camera.__dir__(                      hik_camera.__subclasshook__(
hik_camera.__doc__                       hik_camera.__weakref__
hik_camera.__eq__(                       hik_camera._base
hik_camera.__format__(                   hik_camera._host
hik_camera.__ge__(                       hik_camera._password
hik_camera.__getattribute__(             hik_camera._sensitivity_level
hik_camera.__gt__(                       hik_camera._username
hik_camera.__hash__(                     hik_camera._xml_namespace
hik_camera.__init__(                     hik_camera.disable_motion_detection(
hik_camera.__le__(                       hik_camera.enable_motion_detection(
hik_camera.__lt__(                       hik_camera.get_about(
hik_camera.__module__                    hik_camera.get_version(
hik_camera.__ne__(                       hik_camera.is_motion_detection_enabled(
hik_camera.__new__(                      hik_camera.motion_url
hik_camera.__reduce__(                   hik_camera.put_motion_detection_xml(
hik_camera.__reduce_ex__(                hik_camera.xml_motion_detection_off
hik_camera.__repr__(                     hik_camera.xml_motion_detection_on
"""
hik_camera
#<hikvision.api.CreateDevice object at 0x7fb09183ab38>

With this code I can´t obtain a frame.

Other options:

camera = requests.get('http://192.168.1.64', auth=('admin', contrasenia), stream=True)
#INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): 192.168.1.64
#DEBUG:requests.packages.urllib3.connectionpool:"GET / HTTP/1.1" 200 480
chunk = camera.iter_content(chunk_size=1024)
chunk
#<generator object iter_slices at 0x7fb090b7a150>
bytes += bytes()
#Traceback (most recent call last):
#  File "<stdin>", line 1, in <module>
#TypeError: unsupported operand type(s) for +=: 'type' and 'bytes'

Other:

stream = urllib.request.urlopen("http://192.168.1.64")
#<http.client.HTTPResponse object at 0x7fb090b82320>

Other:

out_cv2 = cv2.VideoCapture('http://192.168.1.64')
#<VideoCapture 0x7fb090b6dc10>
cv2.imshow(out_cv2)
#Traceback (most recent call last):
#  File "<stdin>", line 1, in <module>
#TypeError: Required argument 'mat' (pos 2) not found
ret, frame = out_cv2.read()
cv2.imshow('out', frame)
#OpenCV Error: Assertion failed (size.width>0 && size.height>0) in imshow, file /io/opencv/modules/highgui/src/window.cpp, line 304
#Traceback (most recent call last):
#  File "<stdin>", line 1, in <module>
#cv2.error: /io/opencv/modules/highgui/src/window.cpp:304: error: (-215) size.width>0 && size.height>0 in function imshow
ret
#False
frame
#

Other:

from requests.auth import HTTPBasicAuth
requ = requests.get('http://192.168.1.64', auth=HTTPBasicAuth('admin', contrasenia), stream=True)
out_file = open('img.png', 'wb')
shutil.copyfileobj(requ.raw, out_file)
#The file is empty

This code is from other post with similar problem but I can't use it to get my objetive. What can I do?

Solution 1

Go to your camera settings (network configuration) and check de rtsp port, in my case is 555.

I have a hikvision DS-2CD2D14WD, in my case I had to use the following:

rtsp://yourusername:[email protected]:555/Streaming/channels/2/

You can test your configuration in a program like VLC player.

The path after the IP address can change depending of your model, check
this page for other hikvision models:

https://www.ispyconnect.com/man.aspx?n=Hikvision .

I recomend you to check this github page:

https://github.com/JFF-Bohdan/pynvr.git

Please, Let me know if this information works for you.

Example:

import numpy as np
import cv2

cap = cv2.VideoCapture()
cap.open("rtsp://yourusername:[email protected]:555/Streaming/channels/2/")

while(True):
     # Capture frame-by-frame
    ret, frame = cap.read()

    # Our operations on the frame come here
    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    # Display the resulting frame
    cv2.imshow('frame',ret)

    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# When everything done, release the capture
cap.release()
cv2.destroyAllWindows()

Solution 2

I get this on hikvisionapi-PyPI

from hikvisionapi import Client
import cv2
import time

cam = Client('http://192.168.1.10', 'admin', 'Astra123', timeout=30)
cam.count_events = 2 # The number of events we want to retrieve (default = 1)
response = cam.Streaming.channels[102].picture(method='get', type='opaque_data')
with open('screen.jpg', 'wb') as f:
    for chunk in response.iter_content(chunk_size=1024):
        if chunk:
            f.write(chunk)

time.sleep(1)
img = cv2.imread('screen.jpg')
cv2.imshow("show", img)
cv2.waitKey(0)

Solution 3

This should be the one you are looking for.

    import cv2
    import requests
    import numpy as np
    from hikvisionapi import Client

    cam = Client('http://192.168.1.10', 'admin', 'Astra123')
    while True:
        print("starting picture capture")
        vid = cam.Streaming.channels[102].picture(method ='get', type = 'opaque_data')
        
        bytes = b''
        with open('screen.jpg', 'wb') as f:
            for chunk in vid.iter_content(chunk_size=1024):
    
                bytes += chunk
                a = bytes.find(b'\xff\xd8')
                b = bytes.find(b'\xff\xd9')
                if a != -1 and b != -1:
                    jpg = bytes[a:b+2]
                    bytes = bytes[b+2:]
                    i = cv2.imdecode(np.fromstring(jpg, dtype=np.uint8), cv2.IMREAD_COLOR)
                    cv2.imshow('i', i)
                    if cv2.waitKey(1) & 0xFF == ord('q'):
                        break
                
        if cv2.waitKey(0) == 27:
            cv2.destroyAllWindows()
            break

Comments

[Lingchao Cao]

Thank you so much! It saved my day!!

[rizerphe]

While this code may solve the question, including an explanation of how and why this solves the problem would really help to improve the quality of your post, and probably result in more up-votes. Remember that you are answering the question for readers in the future, not just the person asking now. Please edit your answer to add explanations and give an indication of what limitations and assumptions apply.