In this tutorial I show how to Create and Render a 720p HD Widescreen (.wmv) Video, suitable for upload to YouTube using Sony Vegas Movie Studio HD Platinum 10.
With this method I use Windows Media Video .wmv as the Video Codec to encode the video.
Sony AVC H.264 .mp4 is an alternate format/codec that you could also use to encode a 720p Video.
I have a tutorial showing how to use this method called:
How to Render 720p HD Video .mp4 for YouTube using Sony Vegas Movie Studio HD Platinum 10