clip=avisource("C:\mm4.avi")
clipp=clip.separatefields
clip1=SelectEven(clipp).Crop(0,0,0,287).AddBorders(0,1,0,0)
clip2=SelectOdd(clipp).Crop(0,0,0,288).AddBorders(0,0,0,0)
Interleave(clip1,clip2)