This isn't a problem of epic proportion, but it's still bugging me. In my video collection, I've used the screen grab feature to create thumbnails / cover art. All the grabs are landscape orientation, as you would expect from grabbing a video screen. But a small handful of these are showing up in List Style: Album Thumbnail, Thumbnails, and Tiles views as framed small inside a vertical/portrait frame (like a movie thumbnail would typically use) with the landscape art sized small inside the portrait frame. I've attached a screen shot that circles two problem grabs in one folder, there are more in other folders. If I hover the pointer over the problem thumbnails, the pop-up image appears correctly as a landscape image just like the non-problem thumbnails. It's only that some insist being 'mounted' as a portrait thumbnail in these List styles.
I've rebuilt thumbnails; removed and regrabbed screens; captured full-screen, windowed, etc.; used PrtScr to copy the frame into Photoshop, save as jpg and then load as a Cover Art file instead of a grab, but for the problem videos every new grab mounts in a portrait frame instead of a maximized landscape frame. Is there a way to force the thumbnail frame to landscape when I need to? Is there some characteristic of these videos or their tags that's telling MC to mount them inside a portrait frame? I can't find a distinguishing characteristic.