video graphic driver is up to date...my conversion program been using for yrs / never had problems.
Took some home made AVI's / MOV's / WMV's and placed them ( added or dragged ) onto MOVIE MAKER , they all work !!. You see the frames advancing and previews are shown...
The MP4's are seen advancing when played , but preview screen is Blk...
When I tried to convert particular MP4's to different formats , then convert but when played back " black "
I can open the MP4's in regular Media Player with No problem to view...as well as burn them to DVD's
The 3 MP4 files came from Tru TV / Youtube / Vimeo...
JUST strange that I can DOWNLOAD them , VIEW them , even Burn them to dvd , BUT cannot View them in WMM to edit !!!!!
I surrender.. thxs mberger