1 mb? Then you have to go with 120x240 sized movies less than 10 seconds each, for any QT stuff.
Nothing will get it under 1mb if you plan on using QT.
Windows ASF (at 120x240) could scrape by, for 20 seconds of footage, at VERY poor quality. Or you bump down your FPS to like 12fps or even 9fps. Still, you'd get poor quality movies.
WHY only 1mb? Most movies posted are between 3-25 mb (at 360x240 or 640x480 resolution)
At this point in time, you have to EXPERIMENT with a sample movie with various settings. I've got about 100 different settings that i've written down to achieve what sizes, compression, look (quality) , that would work for what I do (dvd authoring, web authoring), and its not a "job" that comes easily. You have to be willing to play with the tools you have.
So start with your original size, play with the compressions (dont go 100% on quality; go like 60% or 50%)
then play with sizes.
Then play with compressions and sizes,
until you find the quality, size that works for you.
Nothing comes easy.