"Fit" option on images not working, forcing a "fill" instead
Images are .png 960x720 and the video is 1920x1080. I have tried menu-import as well as dragging the images in, multiple times, but it is stretching them to the 1920x1080 ratio no matter what I do. There should be space on the sides of the images, obviously, but instead it's distorting the images. Even if I select "None" it maintains the stretch, while just shrinking the image. I need to insert 100s of these so this is a problem.
I realize I can adjust the X under "Scale" but I feel that is a poor solution and one I don't wish to repeat every single time I want to use an image that isn't the exact same dimensions as my video. So I'm looking for the actual solution to this problem.
The last time I attempted the same exact procedure it worked fine all the way to completion, so I don't know what the issue is here, I'm not doing anything different.
iMac (27-inch, Late 2013), OS X Yosemite (10.10.2)