How to make facetime volume off and normally watch video in Macbook?

I have a question about using my Mac. When I'm connected with others in FaceTime and I turn the FaceTime volume off, then I play a video, the volume is also off.

I want the FaceTime volume off but video volume on. Have any idea how to separate them with the volume control?


Individual Application sound control is only really possible using a 3rd party solution, such as Rogue Amoeba's SoundSource ($35)

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There's also their more comprehensive, but at double the price, Audio Hijack, but I think that would be overkill.