I recommend getting some video editing software to fine tune your movie before uploading. Trim all scenes and cut out any unwanted footage. Nothing more boring than watching the same thing for long periods. Don't waffle-on and talk endlessly. Synthesized background music in some editing software is also boring, good commentary much better.
I use Powerdirector to edit video, not overly expensive and works on my old Core2 Duo computer. It allows me to re-render video to different formats, (AVI, MPEG-2, MPEG-4, etc), change screen size and resolution. Even export directly to Facebook, Youtube, etc.
Paul.