Ah another one!
I've not seen a JFK movie (only ever seen JFK youtube videos) but I've always thought I was watching 'Zapruder Footage' (among other footage, I believe there's others?) It's definitely not a reconstruction in my mind, it's definitely the real JFK / Jackie / etc, not actors.
It's almost as if the new footage is enhanced too (picture quality like) - cos I always remember I could manage to watch the footage because it
wasn't too gory (I don't like gory). But I'm sure when I saw this last, and there was suddenly the new / changed parts (road sign etc) the
actual incident was more detailed too, more gory than it ever was.
Could it be that someone has cleaned up / enhanced the footage (which would explain the extra gory-ness) but additionally found new frames that were somehow lost before? Would this explain it? Would it explain the differences though? Things can like quite different depending on the quality of the footage sometimes. Not sure it would explain a suddenly appearing road sign though, or the differing angle?
(Sorry, I'm just conversing with myself in my head here

)
Thoughts? Who on here is very familiar with the Zapruder footage?