1. http://www.streamingmedia.com/Articles/Editorial/What-Is-.../What-is-a-Codec-74487.aspx 2. http://www.streamingmedia.com/Articles/Editorial/What-Is-.../What-is-AV1-111497.aspx 3. https://en.wikipedia.org/wiki/AOMedia_Video_1 4. https://en.wikipedia.org/wiki/Daala 5. https://en.wikipedia.org/wiki/VP9 6. http://blogs.cisco.com/collaboration/world-meet-thor-a-project-to-hammer-out-a-royalty-free-video-codec