For a standard definition television and a Nintendo Wii.
I have used 3rd party capture software (OBS/XSplit), and they have features that allow you to "Keep Aspect Ratio" of the source video. The Roxio game capture device recognizes the video is rendered in 4:3.
However, Roxio's capture software stretches the image to 16:9 and I cannot find a way around it. In fact, I can record the video via Roxio's software, then watch it in VLC player (a popular media viewing software), and change the aspect ratio to 4:3 and the picture looks great.
I would like to stream and record the video in its native aspect ratio rather than have it stretched.