Adobe is ushering in the next generation of AI art with an upcoming version of Premiere Pro. It’s been about two years since Midjourney ushered in AI art, consisting of art generated entirely from scratch as well as “inpainting” and “outpainting.” Outpainting attracted attention because AI art was being used to essentially extend the boundaries of photographs and paintings, creating a plausible addition to what wasn’t there. Now Adobe is doing the same with Premiere Pro. On Monday, Adobe showed off a video version of what it calls Generative Fill, the same technique that it uses for Adobe Phot…