as an example, this is a comparison of Zune High Quality wmv files produced with PD7 and PD8: (properties of file from Windows Media Player)
PD7:
Video size: 640x368
Aspect Ratio: 1:1 actual, 1.78:1 displayed
Codec: Windows Media Video 9
PD8:
Video size: 640x480
Aspect Ratio: 4:3 actual, 1.78:1 displayed
Codec: Windows Media Video 9 Professional
How can I produce moderate size wmv output and preserve my 16:9 aspect ratio?