3 ms·
This is similar to the solution I found for showing hands and face in a piano lesson. I spent a long time trying to get two cameras working. First by composing
by kettleweek 6y ago
This is similar to the solution I found for showing hands and face in a piano lesson. I spent a long time trying to get two cameras working. First by composing the video streams with ffmpeg or gstreamer and then by screen sharing a application which showed a second video. But in all cases the synchronisation was really bad.
Then I realised a mirror composes two images really well :)
Later I used transparent perspex with lighting (peppers ghost) as the mirror so the laptop screen on the piano is visible.
It is described here: https://www.youtube.com/watch?v=c4Qp8iHre9o&t=1s https://www.youtube.com/watch?v=c4Qp8iHre9o&t=1s
- xixixao 6y agoWell done! (both on the setup and the instructional video)
- steverb 6y agoThis is super useful. I have a daughter who is a piano performance major and I spent ages getting a working two camera set up for her. I wish I had seen this then (or better thought of it myself). I expect her university will end up going fully remote again next semester, so we will no doubt be putting this to use.