[Jeffhs]

My Roku player works just as intended with HD content (16:9 aspect ratio), and the picture looks just fine for my purposes. (I have a 19" flat screen HDTV.) As for programs on the retro subchannels, almost all of which were filmed or taped in 4:3 aspect ratio, I do get the usual black bars at either side of the picture (letterbox) on most of them; however, I simply set the zoom controls for cinema mode when I am watching these channels. The picture then fills my screen, but with some distortion, which is to be expected. The only time I don't reset the aspect ratio is when MeTV, especially, shows programs that very nearly fill the screen. These programs do show small black bars at both sides of the picture, but they are so narrow as to be practically unnoticeable. PBS's DTV subchannels do not, by and large, show these bars, but then again most if not all PBS programs are filmed or taped in 16:9 HD, so no adjustment is required.