Hi,
I have seen some video applications working through the WebPortal, however these are not fully supported due to the way they actually behave.
On the other hand, your IOS code is too old, I would suggest the latest code available since it has the most recent improvements to the WebVPN portion.
To be honest, I usually end up playing video across the AnyConnect client, since in most cases, it does not work as expected through WebVPN.
HTH.
Portu.
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