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Speaking for myself and seemingly everyone I know, we are all on Zoom, FaceTime, Teams, Hangouts, Meet, Webex, or some other videoconferencing tool all the time, whether for paid work, volunteering and nonprofit involvement, the PTA, or socializing and family conversation. I have a GorillaPod flexible tripod and a Glif iPhone camera mount that I use for photography, and they work perfectly well for setting up my iPhone on a small table in front of the TV.
Small tripods or stands for iPhones and iPads are readily available at almost any price. With a laptop, a small table or a few books can put it in position, since you can angle the lid with the camera to your best advantage.
Attach the webcam to the top of the TV set or at least right near it, making sure you have a long enough run of USB cable to reach your computer. When done, use the menu in the preference pane or the system menubar to set AirPlay Display to Off. When finished with a session, show the Control Center again and tap Stop Mirroring. It makes sense to rotate an iPhone or iPad into the landscape position to match the wide orientation of a TV set. The mirroring will follow that rotation. It works fine in all other apps—include Zoom, Hangouts, etc.
AirPlay passes the audio to the Apple TV by default. But in macOS, you can use the Sound preference pane to choose the built-in speakers or headphone jack on your Mac.
You can also pick an audio output source in most of video chat software. In FaceTime, choose the Video menu and then select an audio output option. In Zoom, click the upward-pointing arrow next to the mic icon and select an output option.
Depending on the software, you may not be able to control output volume select within the app unless you switch system audio output to the same device and use the Sound preference pane to set the volume.
If you choose to have the sound carried by your TV set or receiver, you can reduce feedback and echo by adjusting the input settings in the Sound preference pane. Click the Input tab and use the slider to find the right balance between being audible to people on the call and avoiding distracting sound. You should adjust output volume on the TV or receiver and input value to find the right set of levels. A number of third-party adapters with similar features can be found all over, but read reviews carefully.
Though HDMI can handle both audio and video in a single digital stream, you can opt where audio goes in a Mac via the Sound preference pane or by holding down Option before clicking the speaker icon on the system menubar. Depending on your setup, you may be able to modify that. Email yours to mac macworld. You can plug directly into your TV set and control the sound separately—you can send it over HDMI or use internal speakers or speakers or headphones you plug in.
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