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python-webcam-socket-streaming

Python OpenCV webcam sending frames through TCP socket.

YouTube Tutorial

What is a network Socket?

  • A software structure within a network node
  • Serves as an endpoint to send & receive
  • A combination of protocpl type, IP address and Port number for data communication

Implementation of Sockets

In standard interent protocols like TCP and UDP, socket address is the combination of:

socket address = (IP address, port number)

How to find IP address?

Depending on the operating system, you can easily find the IP address of your machine. Go to the terminal window and run this command:

macOS

ipconfig getifaddr en0

Windows/Linux/Ubuntu

ifconfig

For Windows users. The required IP address will show against IPv4 Address.

For Linux and Ubuntu users. The required IP address will be for Wifi LAN (inet).

client-server model

  • Server creates socket on startup
  • May serve several clients concurrently
  • A client should know the server IP and port

Python Server module

Python Client module

Video data transmission

At server side

  • With OpenCV get video frames of webcam
  • With pickle serialize frame to byte data
  • Pack each frame data using struct module
  • Send data to client and display frame

At client side

  • Receive packets and append them to data
  • Unpack the data using struct module
  • Load the frame using pickle
  • Display the frame at client side

Getting Started

Clone Project

you can create a new project based on this repo by doing the following:

git clone https://github.com/1010code/python-webcam-socket-streaming.git

Installation

When that's done, install the project dependencies.

pip install -r requirements.txt

Run server

open terminal and execute server.py. And we'll create TCP socket and listening 8485 port.

python server.py

Run client

After running the server.py, copy paste the IP and PORT to client.py. After doing that, then start client.

python client.py

Demo

  • PC 1: run server.py
  • PC 1: run client.py

  • PC 1: run server.ipynb
  • PC 1: run client.py

  • PC 1: run server.ipynb
  • PC 2: run client.py

Reference