I'm having a difficult getting my first video to display correctly. My monitor resolution is 1920 x 1080. I'm using Camtasia 9 to video my screen. I was told, when I submitted a video for testing, that I should produce an MP4 file that is 1280 x 720. In Camtasia I have my Size settings set as follows:

But, when the video is generated, it doesn't look very good, as you can see below:

The image looks too tall and not wide enough. Could someone tell me what I might be doing wrong? I've spent a lot of time on this and I can't seem to get it right.