WhatsApp has been rolling out video call feature to all of it's users. You need to have the latest version of WhatsApp to make video calls.
But, if you want to get video calls in WhatsApp right now, you can get that in 2 ways.
1) By installing the latest version of WhatsApp APK and
2) By becoming the beta tester for WhatsApp
By becoming the beta tester, you would get latest features than anyone else. So, by becoming the beta tester for WhatsApp allows you to get latest version of WhatsApp and you can make video calls in WhatsApp
I have explained the entire process in the video. Please do watch the video and let me know your comments.
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