NohBoard | A Keyboard Visualizer | Keyboard library
kandi X-RAY | NohBoard Summary
kandi X-RAY | NohBoard Summary
NohBoard is a keyboard visualization program. I know certain applications already exist that do just this, display your keyboard on-screen. And even more probably. However, so far I have found none that were both free and easy to use. That's where this program came in, I made it to be free and easy to use, without any fancy graphics, and easily capturable (possibly with chroma key). Furthermore, it's very customizable.
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QUESTION
I'm trying to display a transparent keyboard like this one (he is using OBS studio): https://www.youtube.com/watch?v=6RCXyh2aICY
So I'm setting all "NohBoard v1.2.2" colors to green (0x00FF00), except the letters, then:
...ANSWER
Answered 2020-Jan-31 at 11:14Simply use the gdi cap as the first input and run colorkey* before scaling.
ffmpeg -y -i gameplay.avi -f gdigrab -framerate 30 -draw_mouse 0 -i title="NohBoard v1.2.2" -filter_complex "[1:v]colorkey=0x00FF00:similarity=.200,scale=560x180 [kb]; [0:v][kb] overlay=x=W-w-520:y=H-h-0 [done]" -shortest -map [done] test.mkv
- gdigrab sends RGB frames, so colorkey will be quicker than chromakey which will require conversion to YUV pixels before keying.
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