I can't seem to figure out what this is talking about. I've tried to change my settings, but nothing works.
This is what it says.
These are my settings. I can't find anything that is 1171x658.
You actually do have your render set to 1171 px wide.
Simply set the "Percentage Scale" to 100% and you will be rendering at the expected 1920 by 1080.
Some output encodings, especially the highly compressed (e.g. h.264) encodings, have special requirements, i.e. width/height need to be divisible by 2 or even 4.
Your width is (rounded) 1171, use a slightly different "Percentage Scale" value as described in the other answer or change the output format.