videos streaming from YouTube aren't shrinking to fit the viewport

[pdpinch]

When the viewport is "short" the video height should be shrunk to fit. This isn't happening for some videos.

this video resizes properly:

this video does not:

There are (at least) two differences between these videos:

• the first one was uploaded this year, the second is a TechTV migration
• the first one is playing from Cloudfront, the second is playing from YouTube

[pdpinch]

It appears that this issue is specific to videos streaming from YouTube.

Here is a TechTV video that doesn't stream from YouTube and it resizes perfectly (in Mac Firefox).

[pdpinch]

@roberthouse54 I'm not sure if this is a CSS issue or not. Can you take a look and let us know if you can fix, or if it's something else?