I am learning 3d animation in Blender software…(free by the way)…This is version 2.67 right now…
Today I learned how to remove the background from a movie just leaving the subject, & then lay that onto a second movie…
http://youtu.be/ZheIidJamFM This is the very good & very short Youtube video that I used to figure this out…(you should totally watch it to get the idea…Then, if you want to use my written notes to help guide you, feel free…)
This is what I was able to do…I took the Bowl of kale movie, removed the background, changed its size & put that onto the water pouring into a glass movie…
Here are my written notes: *(ok, now when I actually went to try this in Blender 2.67, I switched the two IMAGE nodes to MOVIE nodes…I felt somehow that since they were Movie files that it might work better…It seemed to work fine…So when it says in my notes to add an Image Node, add a Movie node instead…)
*Also, in the troubleshooting area: You can Transform either movie…ie: change the size…Just stick the Transform node after the Movie Node & before the next connecting node, then reattach everything logically…
Sari Grove (sarigrove.com)An artist innovating in the Medical Arts... 
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