Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

So, here is the last moving frame in the Newsreel. Notice that we can only see "Ruby's" arm. He is not in the picture otherwise. 

Then, after a flurry, it settles on this:

Wow, that's quite a difference. We are talking about a small fraction of a second difference in time. So, how could the camera go from this to this in a split-second?

It's bull shit. They just tacked that in there. It was not part of the film they were showing. This is just selling. It's propaganda. It's special effects from a movie company that specialized in it.