Ok, so it appears that you are on to something here!
The direct link leads to this page https://lb01-cox-prod-int.cisco.com/VR5SIF/saml/SSO
and this error:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Mon Nov 28 20:38:08 UTC 2016
There was an unexpected error (type=Unauthorized, status=401).
Authentication Failed: Error validating SAML message
.
.
Now, to drill down into the HTML 5 I compared results from the browser that works for streaming, and the one that does not. here are links to the results:
This is the broswser that doesn't work http://html5te.st/7a341032c42f6bbb
this is the browser that does work http://html5te.st/36cc6932c42d9479
oddly enough, the one that doesn't work scores higher. However, there might be some feature i'm missing that isn't apparent to me in the list.
I will say this, using hte direct link at least got me further before i received the error :) Both broswers checked out on the other test as fine.