How to blur hard edges on several side-by-side clips?

[stise]

I'm working on a project with a grid of heavily blurred black and white clips arranged side by side. The plan is to have them all snap into focus simultaneously, but until then I don't want the hard edges between the clips to be too visible. How can I blur the divisions between all of these clips? A screenshot is included below for reference.

[Kevin-Monahan · Accepted solution]

Hi STice,

To soften the edge of the clip, first mask the edges, then feather the edges. Masking and Tracking in Premiere Pro

Here's what I tried.

Thanks,

Kevin