@ jhapaliketo == yes it;s a stop motion video and you cant deny it. we added a continueous frame shooting in some parts which doesn't mean they are not a stop motion video. the one you are talking is an old traditional method which is simple and straight forward. Now the one im doing is a modification adding new techniques.

It was necessary for us to create a video from picz to animate the object as you can see in first part .... boy comes near her gurl without walking or steeping his feet..... it was also necessary when c gets angry and c punches me.... and we also used a paper trick to write... i hate you..... and again they returns back to their home holding each other without steeping their feet. so, yeh i should say it's necessary for us to do stop motion effect. shooting only a video wouldn;t have been possible for us. 
 we used 3 diff  cameras for this purpose. NIKON D40, canon T21, canon g10.


now you are talking about  movies ..... stop motion is not only a way to animate an object or create an illusion. there are so many ways like green screening, pausing the frames, small tricks like cropping the video so that they can duplicate the object. But green screening is the best way and 90 % of the effects they use is green screening.