I think the quality is better...I encoded it differently then the first demo. There are two ways to watch it, either click on the link or watch it in the embedded player on this page.
You could click on the demo link to play in Windows Media Player.
If the video is too dark...click view, then enhancements, then video settings to adjust the brightness.
If you choose to watch the demo on the embedded player below, you will need to watch it full screen. Right click on the video screen and choose "full screen", the video needs to be playing to view in full screen.