Output video not matching input res or chosen aspect ratio

[PoisonedSlice]

@Pathfinding

When I created the job, I set the job resolution at 3840 x 2160

Do you mean the export job? Check settings → video mode and adjust accordingly.

Video Mode

Introduction Video Mode is the project resolution, aspect ratio, frame rate, and color space. It is important to set this as you desire at the beginning of your project. If you try to change it later Shotcut will try to retain the timing of edits, but some users have reported problems, and it is risky. Also, at this time Shotcut will not automatically adjust anything for you related to size and positioning of elements like text and picture-in-picture when changing resolution. You can think of…

Also compare the video mode settings to those found in the advanced tab after clicking the export button. Are they the same?