I want to make a youtube video with me talking, and a transparent background with an image that I can add in as a background. Just using my iMac camera and built in mic, nothing fancy. I want it to be like you would have on a Zoom call. I was hoping I could just do this with Quicktime player but that doesn't seem to work, or I can't see a way to remove the background. Is there an easy way to do this all in 1 step, without having to use editing software to remove the background afterwards?