Scaling images and video is not that big of a feat, unless of course you are Amazon and hire the worst programmers in the world. There is no excuse why SD quality video cannot be properly scaled up to look decent on 720 HD and even 1080 HD. It won't be as sharp or have the detail of true HD, but it shouldn't look blotchy and blurry like it does when Amazon scales it, or fails to scale it. The opposite is true too. It is easy to scale down HD to SD screens. Unfortunately, the idiots at Amazon's Fire group don't seem to understand that, nor much of anything else IMO. Fortunately for me I don't have to worry about that as my iPad has way more resolution than necessary, and Apple knows how to scale up/down video properly. I'm guessing my Fire HD 6 will show HD Prime videos, but I'm not going to waste my time with that device as it is barely able to open the Alexa app in under 30 seconds! You get what you pay for. Cheap tablet equals tons of compromises, and video tends to be one of those compromises.