In my iphone to see sd channels has aspectratio correct 16: 9 but if using shield android TV the same channels have aspectratio of 4: 3 which gives a distorted image.
That could be a setting on your TV. Usually there is a zoom or picture size mode that dictates how to handle various kinds of aspect ratios. Options can be Original, 16x9, 4x3, stretch, zoom, etc…
