Cannot get video stills to show, or videos to play

I have two embeds on this page where I am trying to get a video to show up, but for some reason it isn’t working. I checked web console, and no egregious errors appear while loading/clicking:

https://adminblogs2015.sandiegozoo.org/zoonooz/the-crash-of-the-northern/

At best, the video will play, but tiny, rather than the size we chose…
Any help would be gratefully accepted. Thank you!

Kristin

https://www.ads-software.com/plugins/brightcove-video-connect/