WPMU Unbranded Videos

Hi,

I would like to include a couple WPMUDEV unbranded videos on my website using the embed code. The videos are quite small (480X325). It looks like this is the only available size.

I don't mind stretching the videos a little, however, I could not see a way to do that. The video embed code use an iframe and CSS in a parent won't be applied to an iframe.

Any ideas??