What format do i want to download a video so i can put it into windows movie maker?

FLV
MP3
AVI
WMV
WAV
MOV
MP4
3GP

File formats supported by way of WMM:
Video tutorial files:.asf,.avi,.wmv
Video clip files:MPEG1,.mpeg,.mpg,.m1v,.mp2
Music files:.wav,.snd,.au,.aif,.aifc,.aiff
Home windows Media documents:.asf,.wm,.wma,.wmv
Still images:.bmp,.jpg,.jpeg,.jpe,.jfif,.gif
MUSIC format sound recording:.mp3

Document formats helped by Home windows Live Video Maker:

http://help.survive.com/help.aspxproject=wl_movie_makerv1&market=en-ie&querytype=topic&query=wl_movie_maker_ref_supportedfiles.htm

For those who have other formats which are not instantly supported by way of WMM, it is advisable to convert them using a number of free video clip converters similar to Any Online video media Converter or maybe Format Manufacturing area.

WMV.