Hi,friend. According to your requirement, ANDROID TV BOX served for video and voice chat can rarely commercially available at present. But luckily, one months ago I happened to get one modeled CS918S. This CS918S is equipped with a 5 million vga built-in camera, a microphone and a quad-core CPU. It also allows H.265-formated video programs of 4K as well as video chat. Moreover, it can be used for a video call through SKYPE. When you want to have fun,you can play the video-game Cut Fruit.Wish this can help you.
https://www.youtube.com/watch?v=CH8mee79lEo&feature=youtu.be
