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From The Expert Corner
September 02, 2014
WebRTC Transcoding -Two Worlds
Transcoding, Translating, Transformers … trans-anything is interesting because we love the challenge and we know we can do it, but is it cost effective and does it make sense? Cars that transform into battling robots spiraled into a industry franchise of movies, games, and toys, yet is cost prohibitive to create and ridiculous at all levels. Language translating is very practical and faces the same challenges – costly in terms of educating and learning to translate. The world of WebRTC faces the same high cost challenge – the transfer of audio and/or video from one medium to another, or technical terms, from one codec to another.
Many discussions, articles, and positions have been taken by the W3C. And, to their credit, they have decided to narrow down the browser to 2 audio codecs – G.711 and Opus, and 2 video codecs – H.264 and VP8. This may help to isolate the problem in the Web, but what about the rest of the world that has been using some form of an evolved codec in their devices today – whether for voice or video? The Telecommunications industry has been in the business of providing audio transcoding as soon as they went from an analog signal to a digital signal. However, Moore’s law* has not caught up to the video transcoding technology, that is, audio transcoding is not that expensive, but video transcoding costs too much.
The rubber is starting to hit the road – WebRTC applications are being deployed and communications providers are trying to figure out a WebRTC adoption strategy. Based on several labs and proof of concepts, all the transcoding positioning and testing fall into two approaches ...Read More
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