The Most Comprehensive Guide on WebRTC

TechTalks The Most Comprehensive Guide on WebRTC
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WebRTC or Web Real-Time Communications, though a relatively new web technology, has taken web-based communication at an entirely new level with the promise of heralding into a brave new world of communication on the horizon. The free, open-source WebRTC project makes use of a set of JavaScript APIs to facilitate peer-to-peer communication between web browsers and different devices. The question remains what makes it so popular.

A big draw with WebRTC is it eliminates the use of plugins or third-party software to facilitate real-time communication, helping achieve the ultimate goal of moving in a plugin-free world.

That’s not an ordinary feat anyway; it has revolutionized the face of web-based communication to an extent beyond imagination. Nowadays, for making a video conferencing call or sharing a file—all that you need is a URL. No need to toggle between different interfaces. Thus, WebRTC has opened doors of infinite possibilities for developers and businesses in the form of a wide range of use cases across sectors and industries like HR & Recruitment, Banking, Insurance, Healthcare and Online Education.


How Does WebRTC Work?

Before digging deeper, having a brief understanding of the functioning of WebRTC will help you understand it better in the right context. It requires streaming audio, video and messaging to interchange random data between browsers and applications. Under the hood, numerous linked APIs, protocols and signalling related technologies work in sync within WebRTC to achieve their purpose. These communications APIs protocolsallow the interchange of various media data streams.

To enable WebRTC communication, the following three steps are required:

  • Through GetUserMedia JavaScript API, a webcam or microphone can access various media streams.
  • The basic network-related information, such as ports and IP addresses, needs to be shared with another browser through signalling (which is carried out by RTCPeerConnection JavaScript API).
  • Next, the basic information about media data is carried out by RTCPeerConnection JavaScript API.

What appears simple is in reality a complex process. Read on our blog to dig deeper into the working of WebRTC: What is WebRTC And How It Works


WebRTC: Some Interesting Use Cases

Within a short span, WebRTC stack has become the backbone of modern communication and several huge applications like Google Hangouts and Facebook Messenger, thanks to the ease of development, built-in security, flexibility and scalability it offers. Here are some interesting use cases it offers:






  • Insurance


    Motor insurance claim processes are often long and tedious. Learn how video-enabled motor insurance claim process can improve claimant’s satisfaction and adjusters’ productivity.

    CPaaS transforming the motor insurance industry


  • Video KYC


    Video KYC for banks and financial institutions can be conducted online without having to visit the branch or have someone come for KYC.

    Simplify the eKYC with Embedded Video


WebRTC Adoption: 6 Key Considerations That You Need to Make

Without a doubt, WebRTC has opened a vast window of opportunities. Making a final choice, like any other technology, requires some careful considerations, such as whether you should opt for MCU or SFU topology, server-side or client-side recording. As you continue reading this article, you will learn how to make an informed choice.

Here are the following six critical considerations before taking the very first step toward WebRTC adoption:


  1. Should I Go For SFU Or MCU?

WebRTC, by itself, can only provide peer-to-peer communication on the browser. To enable multiparty calls, an intermediate server is required to receive and send media data. This purpose can be achieved by two topologies: MCU (Multipoint Conferencing Unit) and SFU (Selective Forwarding Unit). Making the right choice between MCU and SFU topologies will be crucial to ensure the quality of communication delivery.


  1. Server-side or Client-side Recording

The recording is not an inherent part of the WebRTC framework. Enabling this feature deserves careful thought like whether you should go for server-side or client-side recording capability.

Readout this article if you want to know more: Recording: Server-side or Client-side?


  1. It’s just VoIP, Can I connect to PSTN?

Though VoIP can be very effective in managed networking setups, considering its better bandwidth management capability, elastic scalability and call quality, it can be problematic in unmanaged IT networks due to local issues, such as work from home and bad weather. Therefore, users must dial into an active VoIP-based WebRTC session from a PSTN when invited to join.


  1. Know These Risks Before Diving into WebRTC

WebRTC is powered by robust security architecture, it’s not a foolproof system like any other technology.

We need to understand that it’s not a standalone system; the WebRTC ecosystem comprises many client-side, hosts, servers, application & transportation layers and cyber security threats may emanate from anywhere.

However, WebRTC is inherently safer in many ways.


  1. Which of the Video Codecs to Use?

Selecting the right video codec is crucial in the WebRTC project as it enables real-time streaming without plugin installation. Therefore, a careful analysis of WebRTC video codecs deserves thorough consideration.


  1. Understand the Limitations of WebRTC Stack

It is a fact that RTC has not been designed for group calling, and it always had a peer-to-peer orientation right from the beginning. That’s why scalability has always been a challenge with the ‘vanilla’ WebRTC protocol. So, before joining the WebRTC bandwagon, understanding its limitations is crucial to staving off disappointments later.


DIY Or Outsource To A CPaaS Service Provider?

By now, if you have made up your mind for adopting WebRTC for communication, you deserve a pat on the back. You have to also think whether DIY or Outsource to a Vendor. Both options deserve a thorough consideration. You should know the pros and cons associated with each option.

If you have decided to go for a WebRTC vendor, it is highly recommended to learn how to choose a WebRTC vendor. To know more, go through our detailed whitepaper: 8 Factors to Consider While Hiring a CPaaS Vendor.


WebRTC Solutions: Are They All the Same?

Now, if you have decided to outsource, the question may arise in your mind that when all CPaaS providers use the same WebRTC protocol, are they all the same? It is to be noted that all CPaaS solutions are not similar despite being powered with similar technology at the core. A host of technologies are used on top of the WebRTC protocol, which acts as a big differentiator.

Different CPaaS solutions may significantly vary in various aspects like bandwidth adaptability which depends on Simulcast, single or multiple RTCPeerConnection, apart from the impact of legacy users who would still be using PSTN/VoIP.

Here is the detailed explanation in our blog that will dispel many such misconceptions pertaining to WebRTC solutions: WebRTC Solutions- Are They All The Same?


Want To Develop Your Very First Video Calling With WebRTC?

Here are four ‘How to’ guides for you:


Looking to create a multiparty video calling solution for iOS application? You can easily do this using EnableX WebRTC platform Video APIs for calling and iOS Toolkit? It allows developers to ramp up app development by hosting on their devices.


Using EnableX’s JavaScript Toolkit and app server of your choice, you can learn to quickly build a multiparty video chat application on PHP.


With EnableX Video Embed, developers can quickly create a fully functional one-to-one or group video calling app on Flutter with API loaded with powerful conferencing, collaborative and reporting features.


Build a feature-rich one-to-one or multiparty real-time video calling Android app using EnableX platform Server APIs and Android Toolkit.


To Conclude

By now, you must have developed a good understanding of WebRTC technology. This open-source technology has opened unlimited possibilities by changing the way real-time communication takes place and consumes. We’re confident that the above WebRTC guide will pave the path forward for WebRTC adoption.


Try WebRTC-based EnableX Solution

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