G'Day Tony !
Thanks, that works, I have now created one (from the sample "Nature.mpg") with a min bitrate of 800Kbps and resolution of 800x450. As long as I only need a few different output settings this method is acceptable. I hope they will make this more user-friendly in the future. If you look at the output options for e.g. "AVS4YOU", this is what it could be like.
Cheers,
Siggy