Nonverbal communication is important in any conversation. But when it comes to a video interview, a lot of the avenues through which we usually give nonverbal cues-eye contact, body language, and small murmurs of agreement-are cut off. So we have to lean more heavily on what we have left, namely facial expressions.
If you're in the room with someone, you can usually tell if they're listening to you intently even if their face is not moving much (and you're never going to be concerned that the person in the room with you has frozen and can't hear or see you anymore). But "everybody can look like a statue over video interview," Turner says. You shouldn't be so static that your interviewer has to wonder if you're still connected.
Short vocalizations aren't the way to solve this problem here since on many common video interview platforms, only one mic can be used at once, Eonnet says. So while two people can speak simultaneously in the same room or over the phone, on a video call, your "yes, definitely!" can mute the other person's microphone momentarily, breaking up the flow of conversation and possibly causing you to miss key information.
Instead of saying "mm-hrn" or "yeah," nod or smile when you'd usually speak. That way your interviewer still gets the feedback they need without your mic accidentally overriding theirs.