Problem completing iMovie to Face Book upload, Problem completing iMovie to Face Book upload

Imade an iMovie 11 lasting nine minutes and 43 sec and placed it on my desktop in avi form. Am unable to upload to U-Tube or

Facebook. Was informed that apparently lost connectivity with the internet while being uploaded. Please try again. No matter how many times that I do, get same result. Also unable to upload directly from iMovie project. Getting frustrated! Any clues?