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| = Android: Screen sharing via HDMI grabber = Solution: |
= Android: Screen sharing via HDMI = '''Solution:''' |
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| == Hardware == | '''Comparison''' * A similar setup can be reached with === Hardware === |
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| 1. HDMI Grabber (plugged into the notebook). If the USB port of the HDMI Grabber is to big, use a USB extension. | 1. HDMI capture stick (plugged into the notebook). If the USB port of the HDMI capture stick is to big, use an USB extension. |
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| == Use with BBB in seminar room == | {{attachment:tablet-hdmi-capture.png}} |
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| Part 1: Setup BBB | === Use with BBB in a Y27 seminar room === '''Part 1: Setup BBB''' |
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| * Open the browser * Login to MY > start a BBB stream (or use MS-Teams, Zoom) * Share the notebook screen in BBB |
* 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). |
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| Part 2: Share tablet screen | '''Part 2: Share tablet screen''' |
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| * 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) |
* 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) |
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| * Frame Rate: doesn't matter | |
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| * Camera output: MJPG - Motion JPEG | * Keep the ''guvcview'' open. To bring the tablet share window to front, click in it. |
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| Conclusion: | {{attachment:guvcview.png}} '''Conclusion:''' |
Android: Screen sharing via HDMI
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
Hardware
- 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.
Use with BBB in a Y27 seminar room
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.
- Select the right video source:
- Resolution: 1920x 1080
Keep the guvcview open. To bring the tablet share window to front, click in it.
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.