I tried twice today to Airplay Amazon Prime to both an ATV3 and the new ATV4. In both cases, the picture is "letterboxes". While I'm not sure, it appears like the wide screen format is "squeezed" into letterbox form rather than the normal letterbox that just slices the ends off the picture. Wonder if this problem is caused by Amazon or Apple to downgrade the video picture? At the moment, it means nothing to me as my Samsung also has an Amazon Prime app that works just fine and if I happen to want to watch Amazon on my iPad, the picture is in normal wide screen mode. So, who fired the first shot, Amazon or Apple?