what is this effect called?

Hm - Not sure if it's exactly what you're looking for, but you could do something like this with CC Color Offset + a mild blur effect. To get the "shift" you'd probably want to duplicate the layer, apply a different color offset to each, the offset their X positions slightly and adjust opacity to get the image where you want.

For the bottom two frames, add a mask in a rough diamond or oval shape and then turn the feather way up to get the vignetting effect.