Because the file is in .MP4 and uses the H.264 codec.
And also Windows Movie Maker does not support flip camcoder video directly. So you have to use a flip video converter to convert flip video to wmm compatible wmv, avi, mpg. I can recommend you a professional one that I am using all the time. It works pretty fine for me.
http://www.vconsoft.com/flip-video-converter/import-flip-video-to-windows-movie-maker/
You may have a try. It sure can help you!
You don't.
You can use both video and photographs from a camcorder on Windows Movie Maker.
Yes,you will need windows movie maker to download content from your camcorder to your computer.It is best to have this if you want to obtain good results.
How are you trying to import the video? With Windows Movie Maker, Windows Photo Gallery (or other program)? Windows Photo Gallery should work for importing your hd camcorder video. Windows Movie Maker is rather persnickety with importing (my experience anyhow). Open Windows Photo Gallery and click on File, Import from Scanner or Camera.
You can use the Capture Video option in Windows Movie Maker to import camcorder video. Or you can use an external program to upload it to your computer first. In any case, the video format must be compatible with Windows Movie Maker if you intend to edit it:.asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, .wmv
No. You can't use Windows DVD Maker to upload videos with. But you can upload videos to YouTube using Windows Live Movie Maker.
There are several ways you can share your Windows Movie Maker videos with others. I suggest watching the video tutorial at the URL posted below:http://sclipo.com/videos/view/share-anywhere-easily-with-windows-movie-maker-2
You can import your videos from any device onto Windows Movie Maker, but they have to be in a compatible video format first:.asf, .avi, dvr-ms, .m1v, .mp2, .mp2v, .mpe, .mpeg, .mpg, .mpv2, .wm, .wmv
You can't do that in Windows Movie Maker, Live Movie Maker or any other version.
NEWS
No. Unfortunately you can't overlap anything on Windows Live Movie Maker.
You need to convert Quicktime videos to a format compatible with Windows Movie Maker.