Hallo @ all (who reads this)

I've think I read the most Tutorials about Animations and must say they are really helpfull.
But I've missed one Information: Is there a Way to edit an Animation?
I don't want to replace or making a new one. Just looking for a Way to extract, run the Anim in an externel Programm, editing a little and reload it.
Is this able to do?

(sorry if you getting headache reading this, my english isn't that good)

I asked the same question here. Have a read. It's not easy certainly.