Whilst trying to create a short video from an image in lightroom, the result is not what was selected. I selected a portrait version but every time I try to produce a video it produces a cropped landscape version that is not acceptable.

Hi ​@stuartful, I'm just checking in to see if the suggestion helped or if you are still running into this issue? Let us know how things are going. Happy to keep troubleshooting with you if needed. Thanks! ^CH

Can you confirm the aspect ratio that you have chosen as shown here: