parthanaboina praveen
3 min readJun 12, 2021

Video Chat App Python: How to Create a Video Chat App Using Python and OpenCV

Introduction to Technologies Used Here:
Python OpenCV
Socket Programming in Python
What is Python OpenCV?
OpenCV-Python is a library of Python bindings designed to solve computer vision problems.
Python is a general-purpose programming language started by Guido van Rossum that became very popular very quickly, mainly because of its simplicity and code readability. It enables the programmer to express ideas in fewer lines of code without reducing readability.
OpenCV-Python makes use of Numpy, which is a highly optimized library for numerical operations with a MATLAB-style syntax. All the OpenCV array structures are converted to and from Numpy arrays. This also makes it easier to integrate with other libraries that use Numpy such as SciPy and Matplotlib.

What is Socket Programming in Python?

Socket programming is a way of connecting two nodes on a network to communicate with each other. One socket(node) listens on a particular port at an IP, while the other socket reaches out to the other to form a connection. The server forms the listener socket while the client reaches out to the server.
They are the real backbones behind web browsing. In simpler terms, there is a server and a client.
Socket programming is started by importing the socket library and making a simple socket
Features of Video Chat applications:
Listed below are the main features of the Video Chat application:
It facilitates the users for live video streaming so that real audio-video communication is established.
The application has four scripts: client script, server script, video feed script, and video socket script.
The application can’t work offline. It is useless without a reliable internet connection.
The application can’t establish a connection itself but assists other media ineffective communication.
Video Chat Application utilizes web conferencing for video streaming.

There are two files in the Video Chat app project:

Client Script:

to open socket; initialize video socket plus normal socket; connect sockets; send/receive code

Server Script:

to open server-side socket; transfer data; listen to incoming chat messages, wait for client response
As this Video Chat project is supposed to perform video streaming along with instant messaging, its working process depends on web conference and push technology. Push technology is based on internet communication in which a request for a transaction is initiated by a central server or publisher.
Synchronous Conferencing and Instant Messaging are typical examples of push servers. Web Conferencing is a web service to allows the conferencing event to be shared with a remote location.

Python Code for Video Chat Application:

Server. Py

Client.py

Run

Thankyou.

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