Pity the frame rate isn't fast enough on that camera to get a better view, but look at the tails. I'm pretty sure those are Helldivers, if USAAF then they are A-25s, which they never used in combat, but did use in training, as small number. Or they could be Navy. The broad vertical stab is pretty much Helldiver, and I can see the long canopy in a few frames if you look at the AC in the foreground as it goes past. I'm pretty sure those are radial engines as they come in and as the foreground AC goes past. Also look at the wings, if you can see thru the blur; there's only a couple of frames that you can see them clearly.
I've looked at this film many times over the yrs trying to figure out what they are, as they are usually labeled as P-51s, which they obviously are not.
This is what comes of being a bit OCD about such things. I wish there were a complete source of the film, as I assume it shows them closer and in formation.