this may be a noobish question. What is the best way to put something you made in blender into real footage?
Basically you add your video as a Strip in the Sequence editor, your objects in the scene will render in front of it. However, you should search here and on the web for “compositing live action”, “rotoscoping”, “matchmoving” and “camera tracking”.
see Rendering Animation in the wiki. It creates a movie based on your scene. http://mediawiki.blender.org/index.php/Manual/Rendering_Animations