#AzureIoT – RTSP Webcam, add rtsp camera 📷 capabilities to your Edge Device #JulyOT

Hi !

Today, during my [Let’s setup a Raspberry Pi and a reTerminal as an Azure IoT ☁️ device] session, one of the questions was about what cool scenarios we can run once we have a Raspberry Pi as an Azure IoT Edge device.

Besides the use of Cognitive Services (only for x64), a cool and fast idea can be to convert your RPi to a RTSP Cam device. We only need to connect a USB WebCam to the Raspberry Pi.

Once the USB Camera is connected, we need to add the following Edge Module to the device configuration

azure iot edge module RTSPWebcamonIoTEdge

More information: RTSP Webcam

The module runs as a IoT Edge container named RtspWebCam. While running the container image, one must map the USB camera on the host device to the container by using the following module createOptions parameters: PathOnHost=/dev/video0, PathInContainer=/dev/video0.

Once we add the module, we can see the module running in the device:

module added to the device

And, we will have access to a RTSP Camera. And we can run a sample python app to have the view from the camera.

camera view from the RTSP Pi Demo

Sample Code

# Copyright (c) 2022
# Author : Bruno Capuano
# Create Time : 2022 July
# Change Log :
# – Open the camera feed from a RTSP address
#
# The MIT License (MIT)
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
import time
import cv2
# Camera Settings
camera_Width = 640
camera_Heigth = 480
frameSize = (camera_Width, camera_Heigth)
video_capture = cv2.VideoCapture("rtsp://rpiDev12:8554/stream1")
time.sleep(1.0)
while True:
ret, frameOrig = video_capture.read()
frame = cv2.resize(frameOrig, frameSize)
cv2.imshow('@elbruno – Azure IoT Edge Camera', frame)
# key controller
key = cv2.waitKey(1) & 0xFF
if key == ord("q"):
break
video_capture.release()
cv2.destroyAllWindows()

Happy coding!

Greetings

El Bruno

More posts in my blog ElBruno.com.


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