Editing the width of videos or images in Rise

Thanks Renz. My goal is to make the width of all media consistent throughout the module. It makes no difference to me whether I change the width of the videos or the width of the images; I'd just like them to be consistent. In case it's helpful to know: I captured the screengrab videos using Replay360 and captured the still images using SnagIt.

This is what is looks like when the video settings are set to Medium.

And this is how it displays if I set the video to Small.

Either way, the width is very different than the width of the still images. I've attempted to change the size of the images in SnagIt (the program I used to capture the images) but it doesn't seem to impact how they display in the e-learning module once I upload them. I'd be grateful for any help you can offer.