Ok well i just recently dowloaded windows live movie maker from the microsoft website. My videos imported fine and i proceded to edit them. however, when i was done i saved it and it converted to mp4 and i when i went to replay to get it ready to upload to youtube there was audio but no video. I thought forsure this was a codec problem so i downloaded some codecs on microsofts website and also a media package from a third party site and still no luck. What could be going wrong here? Thanks for any advice!