I am in charge of recording sermons at my church. We put them on CD for people who couldn't make it or who want to share with a friend, and I have been trying to get them on YouTube so that we can share them even more.

I created an image to use for the video (because our recordings are audio-only) and it is 1920x1080 pixels, because that was on the list of ideal resolutions for YouTube. I made a custom save template (or whatever you call it) that matched this size, but whenever I save the video it comes out with a fuzzy black line around the outside.

Can anyone help me fix this problem?

https://www.youtube.com/watch?v=EtqAdX_BhDY