I like this blog post(Easy-to-use WebRTC iOS SDK Lets You Build WebRTC iOS App). It helped me a lot and hope it helps you too.
Ant Media offers free WebRTCAndroid, iOS and JavaScript SDKs. iOS SDK lets you build your own iOS application that can publish and play WebRTC broadcasts in a practical way with just a few lines of code. In this doc, you can cover the following topics.
Run the Sample WebRTC iOS app Publish Stream from your iPhone Play Stream on your iPhone P2P Communication with your iPhone Develop a WebRTC iOS app How to Publish How to Play How to use DataChannel
WebRTC Technology WebRTC is a free, open project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. Namely, WebRTC enables for voices and video communication to work inside web pages. The WebRTC components have been optimized to best serve this purpose.
WebRTC is HTML5 compatible and you can use to add real-time media communications directly between browser and devices. And you can do that without the need of any prerequisite of plugins to be installed in the browser.
WebRTC presents a protocol that enables ultra-low latency communication between pairs over the Web by using web browsers without plugins. Almost all of the popular browsers (Chrome, Firefox, Safari, Edge, Opera, etc.) comes with WebRTC support without any plugin dependency.
As it is an open source project, this has created a vibrant and dynamic ecosystem around WebRTC with various open source projects and frameworks as well as commercial offers from companies to help you build your products.
What is it good for? WebRTC is available via JavaScript in Firefox, Opera and in Chrome on desktop and Android. WebRTC is also available for native apps on iOS and Android. Both browser and mobile APIs provide several built-in features like camera/microphone capturing and playing to make possible video calls. WebRTC protocol transfers not only video and audio streams but also data streams like game data.
There are several other protocols for media streaming, like RTMP (Real-Time Messaging Protocol), HLS (HTTP Live Streaming) and MPEG-DASH (Dynamic Adaptive Streaming over HTTP). However, WebRTC has some key features that make it a promising technology such as:
Ultra-low latency streaming Browser support without a plugin Native mobile platform support for Android and iOS