Gemini is capable of video - you can point your phone camera and talk about something you show Gemini in real world. My ChatGPT app can do just audio conversation.
Chatgpt can do that as well.
OpenAI had demoed it some half a year ago, but access since then was limited. I got access to it just last week (via ChatGPT app). Since I'm in Poland, I kind of assumed US users had this for at least a month, but maybe they roll out their features by different criteria than just geography.