There is a few ways to do that, and you can do it just using 2 programs (adobe after FX and flash)
1)Open new project in Adobe AFX
2)file >> import >> footage file
3)composition >> new composition (then make the compís setting 300x260 @ 24 fps.)
4)Now you have to drag your (movie layer) in (composition layer)
5)Effects >> Adjust >> Hue/Saturation(Set Master Saturation level to -100)
6)Effect >> Blur >> Gaussian Blur. Select number 1 or 2.
7)Effects >> Adjust >> Threshold (and play with settings)
So now is the time to convert your movie in "BitMap Sequence"
Now you have to exchange your (rendering settings) to "BitMap Sequence" and press "render"
1)Open new MC and insert inside all images
2)Select image and modify >> trace bitmap (you have to do it for all frames , one by one)
3)Now you can delete all bitmaps from libraly