WebRTC is unable to adjust seamlessly to the available capacity, negatively impacting user experience with degradation of voice and video quality and lost connections. This can be frustrating on mobile devices, on which users are frequently moving between high and low bandwidth environments. It also does not adapt to fluctuating network bandwidth, which would need to be built from scratch to adapt to wavering connectivity. As a result, it does not optimize the use of available processing power. copyright moxtra,Ĥ Another challenge for WebRTC is that it does not take advantage of Apple s hardware acceleration technology. It is also important to note that the last time there was an omnipresent video solution for the browser (Adobe Flash), Apple impeded it s ubiquity by refusing to allow it on ios. This is particularly significant in view of Apple s continued dominance in the mobile sector. Apple has not revealed its stance on WebRTC, but does not currently support it. In fact, Microsoft has developed it s own alternative and possible competitor to WebRTC, ortc, which it has integrated into the Microsoft Edge browser. Both Apple and Microsoft do not currently support these codecs, with Microsoft supporting the H.264 codec and Apple supporting neither. Though Google has a vested interest in promoting the open web and standards that support the web as a platform, other vendors may not benefit from WebRTC and have no incentive to capitulate to Google. Google has long championed WebRTC, specifically by providing the VP8 & VP9 video codecs WebRTC uses, and ensuring Chrome has the most advanced WebRTC support. WebRTC is currently only supported by Google Chrome and Mozilla Firefox. With this support, developers could build applications assuming end-user compatibility, regardless of browser. CHALLENGES FACING WEBRTC A cornerstone of WebRTC s vision of interoperability is that it must be supported ubiquitously by all widelyused browsers. As a result, simple audio and video calling is only a click or two away from users in supported environments. Instead, it is the embedding of the baseline elements needed for audio and video communication within some browsers. WebRTC is not a compression protocol like H.264 or G.729, a communication protocol like SIP or H.323, or a programming language. By using JavaScript application programming interfaces (APIs), the large community of web developers can add real-time communications quickly, without worrying copyright moxtra,ģ about long-development cycles, firewall traversal, licensing codecs, inefficient plugins, or distributing software clients. Leveraging WebRTC reduces the complexities of implementing audio, video, and telephony for web developers without domain expertise. Building real-time capabilities for consumer apps can be cost prohibitive, as such business models often generate low revenues per user. This is especially true for those who specialize in building OTT (over-the-top) consumer apps. ADVANTAGES OF WEBRTC WebRTC is free to implement, lowering the barrier to entry for developers. This paper investigates the extent to which WebRTC delivers on this promise. The vision behind WebRTC was to address these issues by creating an interoperable open standard framework, eliminating the need for the aforementioned plugins and downloads, and enabling web developers to add real-time communications to their applications with simple JavaScript APIs. Prior to the advent of WebRTC in 2010, developers relied on cumbersome plug-ins (like Adobe Flash), or multivendor browser extensions that required download. It includes the fundamental building blocks for multimedia communications such as audio, P2P file sharing, and video components used in mobile and web browser applications. BACKGROUND OF WEBRTC WebRTC (Web Real-Time Communications) is an open-source project enabling plugin-free, browser-tobrowser communications. This paper explores the current status of this standard, reviews WebRTC s evolution and challenges, and attempts to determine whether WebRTC should be considered a standard for developers seeking to add real-time communications to their applications. 1 ! WHITEPAPER webrtc: the premise and the promise copyright moxtra, 2016Ģ EXECUTIVE OVERVIEW WebRTC is considered a nascent industry standard for incorporating real-time communications capabilities into web browsers and applications.
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