Thanks Shane. I cropped the images at 720 x 534 as you suggested. I was unclear about why I needed to resize the image to a height of 480 pixels after I cropped it to 720×534, so I ran a test. It looks like the image shows up within the action safe area if I resize the image to a height of 480 px, but that it leaves a black border around the image too.
My conclusion is that if I want the image to fill up the entire screen without the black border, then I should not resize the 720×534 image to a height of 480px, right? I’ll just need to be aware that the main content in my image will need to stay within what will be the title safe and action safe parameters of the video.
~Chris