Looking for WiFi Direct emulator

https://www.bing.com/search?q=wifi+direct+emulator&go=Submit+Query&qs=ds&form=QBLH

  I visited this link

https://www.youtube.com/watch?v=mzjB7ejem9I

connect two Android devices without a router via Wifi Direct

from Wi-Fi peer-to-peer overview | Android Developers https://developer.android.com/guide/topics/connectivity/wifip2p

Wi-Fi peer-to-peer (P2P) allows Android 4.0 (API level 14) or later devices with the appropriate hardware to connect directly to each other via Wi-Fi without an intermediate access point (Android's Wi-Fi P2P framework complies with the Wi-Fi Alliance's Wi-Fi Direct™ certification program).

I watched the above video to reproduce the steps, unfortunately, my 4.2.2 Android tablet shows no menu item for WiFi Direct

  Asked my friend to check and his Samsung smartphone Android 5.0 shows router option and none for WiFi Direct

  All I can select from my tablet's Settings/ WiFi/ other is Hotspot for Internet access sharing  / tethering

My interest is to stream video from 1.Android.Tablet to 2.Android.Tablet over WiFi Direct

  WiFi Direct specification and manual is about 180-page long

  Not sure how to enable WiFi Direct on my tablet.

Anyway I can still connect from my tablet to P2P (WiFi Direct) camera to watch live video feed

So if both of your Android devices support WiFi Direct connection, the above video comes with a solution to your question

Looking for a WiFi Direct emulator, I visited this YouTube video.

Connect two Android devices without a router via Wifi Direct.

From Wi-Fi peer-to-peer overview | Android Developers,

Wi-Fi peer-to-peer (P2P) allows Android 4.0 (API level 14) or later devices with the appropriate hardware to connect directly to each other via Wi-Fi without an intermediate access point (Android's Wi-Fi P2P framework complies with the Wi-Fi Alliance's Wi-Fi Direct™ certification program).

I watched the above video to reproduce the steps. Unfortunately, my 4.2.2 Android tablet shows no menu item for WiFi Direct. Asked my friend to check and his Samsung smartphone Android 5.0 shows a router option and none for WiFi Direct. All I can select from my tablet's Settings/WiFi/other is Hotspot for Internet access sharing/tethering.

My interest is to stream videos from one Android Tablet to another Android Tablet over WiFi Direct. WiFi Direct specification and manual are about 180 pages long. Not sure how to enable WiFi Direct on my tablet.

Anyway, I can still connect from my tablet to P2P (WiFi Direct) camera to watch live video feeds. So if both of your Android devices support WiFi Direct connection, the above video comes with a solution to your question.