This is the Electron Capture app,

Created originally for VDO.Ninja users, it can provide users a clean way of window capturing websites or as a production-oriented Chrome-alternative with numerous performance tweaks. It can also be used to pin live chat overlays on screen, screen share without user interaction, increase the resolution of Zoom streams, and much much more.

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Why was this made ?

On some systems the OBS Browser Source plugin isn’t available or doesn’t work all that well, so this tool was made as a viable agnostic alternative. It was originally built to let you cleanly screen-grab just a video stream without the need of the OBS Browser Source plugin. The app was also made to make selecting the output audio playback device easy, outputting audio to something such as a Virtual Audio device: ie) https://vb-audio.com/Cable/ (Windows & macOS; donationware) or VAC (Windows @ https://vac.muzychenko.net/), or Loopback (macOS).

While the OBS Browser source is ever maturing, and…