To rehash my previous directions for creating a decent file using Windows Movie Maker once you have edited your video:
- "Save movie file" option which will open up a wizard.
- When you get to the selection for "Movie Settings", use "Other Settings".
- From the drop down box select "Video for Lan (768Kbps)"
- Under movie file size check that the estimated file size is below 200MB.
- If it is not from the drop down box select "Video for Broadband (512kbps)"
- If it's still not under the limit of 200MB use the next lower one.
One other thing to note is that there is also a time limit around 16 minutes you have to upload a file. If you're on a slower connection you may not be able to upload such a large file. In fact a 200MB file is going to push the limits of a very fast connection to complete the file upload in that time. You may want to consider cutting longer videos into 5 to 10 minute parts so you can maintain quality.
I'll be providing a in depth tutorial on the best way to encode and split videos at some point in time.