I found an HDMI capture device that can send video through WebEx- it’s Mac-only, called a Blackmagic Design Intensity Shuttle. It’s about $300, and requires USB 3.0 or Thunderbolt – I have the Thunderbolt device, and you really want to be careful in ordering one to make sure you have the right connectivity!
Why is this useful? I’ve got a Cisco Tandbberg C20 connected to it at the moment via the HDMI input. The C20 has a Pan-Tilt-Zoom (PTZ) camera, with a remote control that lets you program pre-set positions for the camera - amazing in a classroom setting when you're moving from demonstration/display items to whiteboard to instructor to students asking questions. You know this already, there are a lot of things you can do!
The screenshot below is displaying the 'self-view' only of this 12x zoom camera - but I've used this to (pretty) good effect in some larger product-focused webinars, and it's a "geeks delight" to say the least.
That said, the Shuttle appears as about 15 different “devices” – all with different resolution, fps and bit options.
It seems to work on the “HD 720p 60 – 8bit” or “HD 720p 60 – 10bit” setting.
It seems to work on the “HD 720p 60 – 8bit” or “HD 720p 60 – 10bit” setting.