Maybe...who knows. But I have been doing it for 
a while for my cels. What you do is get a screen 
capture of the scene, then use an editor to 
smug/airbrush remove the character out of it. 
Sometimes, you can get lucky and maybe the 
character walks out of the scene completely, in 
which case, you only have to extend the edges. 
When you have a 'clean' background, just print 
it out on some photo paper and put it behind 
your cel. It makesyou have to 'crop' the image 
just a little bit because a piece of computer 
paper isn't as big as a cel, but most of the 
time, it doesn't involve any cropping of the 
image. Here is one I've done recently. Many many 
more on my site.