Codec innovator V-Nova will go to NAB next week with a new version of its Perseus P.Link contribution encoder, which drives down contribution feeds by another 40% to 50%. The key ingredient in the new version are machine learning algorithms. V.Nova has made it clear in the past that its proprietary approach to codecs is to express intraframe video in a hierarchy – so this is the art of compressing the image for each frame – it produces layer after layer which are each more complex than the previous one. But it only sends the differences from the prior layer. This is seriously important in contribution codecs as they must be lossless, whereas Interframe compression is about sending change information…