Basicly I was getting a feel for quality versus file size.  This clip was 54 seconds long for a 9 meg flash file.  There were 280 images, most at .14 seconds, some were a few seconds long.  Getting smooth motion will take more rendered images.  More quality and detail in the terrain translates into longer render times multiplied by the increase numbers of images.  I guess that's what it will take.....keep trying.  Thanks!