Whatsapp is offering a lot of
features that are useful for both iOS and Android users. Whatsapp rolled out
its PiP feature (Picture in Picture) that will allow you to minimize that video
screen and let you surf other apps without disturbance.
According to Beta tester of Whatsapp, this PiP feature of WhatsApp is under testing process and it will allow users to see video playbacks Picture in Picture mode also without disconnecting the phone call.
It means that you can play different videos after switching your WhatsApp chat. This PiP feature is tested in the 2.19.177 Android Beta Version. Now, this feature will be completed in a few months as if there is no timeline given and no news for PiP feature availability is given for iOS users yet!