WhatsApp is a popular messaging platform that has a call feature, but you cannot video call someone yet.
In the latest WhatsApp beta, some users saw video calling feature. However, not every of them was able to use it. For example, when some of the beta users clicked on the video call button, it said, “video calling is not available right now”. However, this feature was available for other users.
Right now, there is no information about when it will be available for normal users, but you can expect to see it soon.
Source – GSMArena