You are probably here because you are facing an issue with your media cutting off, something like this:
While the original media was:
This is because the Aspect ratio was converted to square and the original media is in the landscape format.
To adjust the whole picture in the frame:
Click on the media, the first option will be Media-Size. Select the option Fit in frame.
After fitting in the frame, the background is still blurred. You could set the background colour as: