guess I'll go home and check for you
I would think so...but I'll do it for myself just to make sure...
the only catch of course is this...
say I have my 14gb hd home video...it's 1440x1080....if I convert to dv/ntsc it goes to 720x480 (I think) but still 14gb...or sometimes ends up bigger! lol
I'm currently in the process of revisiting all my home movies to further tailor them...adding texts and effects, etc. So testing that is no bother
EDIT: from MS kb...
Recording Video into Windows Movie Maker (Part 3 of 3)
Importing files
You may have material such as existing photos, audio clips, or other video files stored on your computer that you want to use in your movies. You can use these files after you import them into Movie Maker. When you import a file, a clip that refers to the file is created. Clips are the basic building blocks of your movie. The combination of clips, when added and arranged on the storyboard or timeline, forms your entire movie. Movie Maker lets you import many different file types, including the following:
• Video files with an .asf, .avi, or .wmv file extension.
• Movie files with an .mpeg, .mpg, .m1v, .mp2, .mpa, or .mpe file extension.
• Audio files with a .wav, .snd, .au, .aif, .aifc, .aiff, .wma, or .mp3 file extension.
• Windows Media-based files with an .asf, .wm, .wma, or .wmv file extension.
• Still images with a .bmp, .jpg, .jpeg, .jpe, .jfif, .gif, or .dib file extension.