I have windows 7 64 bit.i made a few videos with windows movie maker and now when i load an mp4 file it doesnt display in the program correct.It shows a file that has 7 seconds of a black screen and no sound. the movies i already made are also mp4 files.
i tried restarting my computer and checking for updates. i ran kasperski virus scan and tried opening different files. i got one to work randomly but it wasnt mp4. my computer is an asus g73 laptop. it has the i7 and ati radeon 5870 with 6 gb of ram. also
there is more than 500 gb free on hd. im confused why the program worked fine when i uploaded a video to youtube then tried making another and it wont even load a video to be edited?