Agent, I do not use the Exporter in the Aces High Film Viewer. It can be buggy by creating bad avi files.
An AHF file is complety different than a AVI file.
AHF file saves data such as the plane type, directions, speeds, position, heading stuff like that. Aces High film viewer then recreates the flight log using those 3d planes your computer has stored on its hard drive.
An avi file is a file that stores pictures and put's them together in 1 file. These pictures can be played at a rate of 30 pictures a second. Many codecs (encoder/decoders) will compress these pictures so that you can have a file have 5,000 pictures, and play them 30 pictures a second and still have a very small file size.
I use
http://www.fraps.com software and set it up first, then leave it running in the background. Open the film viewer, play your film and record what you see in AHFV with the fraps software. Fraps encodes it with their codec and it does a great job of keeping a 30sec file to about 300Mb. That is way too large for the internet but it can run okay on slower machines. It captures, encodes and saves these files all while running AHFV. YOu can tell fraps to record at half the resolution to allow for a faster performance during recording.
Play with fraps and become familiar with it. I hope I didn't make things more confusing.
I hope the fraps avi files will be easy on your computer so when you use Windows Movie Maker or some other Video editing software, that your computer will handle them. Uncompressed files are hard to handle and are not necessary for the production of high quality internet films.