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Solution: Share the tablet screen to a Notebook via HDMI. The Notebook uses the shared screen a) like a 'webcam' or b) shows the shared screen and reshare the window. Comparison A similar setup can be reached with

Android Tablet with USB-C connector (Samsung Galaxy S4, S6). USB-C / HDMI Adapter (plugged into the tablet) HDMI cable (between 2 and 4) HDMI capture stick (plugged into the notebook). If the USB port of the HDMI capture stick is to big, use an USB extension. tablet-hdmi-capture.png

Part 1: Setup BBB Power on the Seminar room laptop. Open the browser. Login to MY > start a BBB stream (or use MS-Teams, Zoom). Share the notebook screen in BBB - or just the guvcview window (see below). Students in the room: switch on the beamer (small black box, takes 2 minutes to power on). Part 2: Share tablet screen Connect the tablet with HDMI Capture stick to the notebook (see hardware above). Samsung: do not use Samsung DeX .. the tablet will act as a notebook, not as a tablet (in this scenario more disadvantage than advantage). Start guvcview (webcam icon on the left panel) Select the right video source: On tab Video Controls select device: USB Video: USB Video. There are probably two (same name), check both. A popup appears: Launch new process or restart? >> restart. Resolution: 1920x 1080 Keep the guvcview open. To bring the tablet share window to front, click in it. guvcview.png Conclusion: The notebook webcam can still show the speaker. A window (=guvcview) is the tablet screen. The quality should be fine for streaming as well as beamer presentation (both at the same time). The seminar room microphones are used as regular.