At last week’s NAB (National Association of Broadcasters) show in the US, video encoder company Harmonic upped its game in the mobile market with EyeQ, which reduces the bandwidth for encoding based on what the human eye can sense. EyeQ is a form of perception filter which delivers 50% better compression, so that HD streams can be compressed to under 1.5Mbps. Harmonic says this comes in under the data ceiling of US zero-rated mobile services and that it will also work with xDSL networks, meaning far better quality video on those. Harmonic is not the only company making progress in this area. Israeli start-up BEAMR has been working on perception filters for several years, while Harmonic rival V-Nova recently claimed…