when the video plays at my max screen width the video player is slightly taller than the container. Looks like 763px does it on my screen, but we may want to increase that just in case.  Some videos are a lot more square, although it's unlikely those will show up here as they are non-premium providers. 
![screen shot 2014-01-14 at 2 42 39 pm](https://f.cloud.github.com/assets/201367/1915773/34da105c-7d6d-11e3-996f-ef0be8dbccdc.png)