New ask Hacker News story: Ask HN: Offline video call via HDMI cables

Ask HN: Offline video call via HDMI cables
2 by pnnp | 0 comments on Hacker News.
Our conditions force us to make video call between 2 rooms almost every day for learning and teaching. We don't have a good Internet connection here. However, we do have 2 long HDMI cables, 2 HDMI TV, 2 laptops. So we are trying a very simple approach that is just connecting them like the following illustration. Room A Computer ]-- HDMI Cable --> Room B TV Room A TV <-- HDMI Cable --[ Room B computer Then on the 2 laptops, we just use a simple WebRTC like this one: https://webrtc.github.io/samples/src/content/devices/input-output/ to stream the video & voice call to each other. The WebRTC does have echo problems with computer built in microphone. So my question is: Does any free/open source offline software that can handle this streaming task better then WebRTC, or do you have any suggestions? (PS: We have Ubuntu OS computers. Just in case, we can also borrow Mac computers). Thanks HN.

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