How to avoid a wrong aspect ratio in your videos (Bad Bunny - Where she goes as example)

How to avoid a wrong aspect ratio in your videos (Bad Bunny - Where she goes as example)
The music video for 'Bad Bunny - Where She Goes' is absolutely amazing-fantastic work! However, have you noticed this specific detail? The aspect ratio in these two clips wasn't set correctly.
If your video was recorded in a different size, use "Scaling". Let me show you:
Fist step: So we can create this in 2 formats, one example is Bad Bunny video in 16x9 or instagram story format is 9:16, make click in this button "project settings" and select "Use vertical resolution" if you are looking for 9:16.
Second step: In Inspector We're going to "Retime and Scaling" basically here in Scaling I have a couple options and I'm gonna just click on "fill" and that's it!