DOWNLOAD LINKS

https://github.com/Genymobile/scrcpy/releases/tag/v1.2 (To download Scrcpy)

https://developer.android.com/studio/releases/platform-tools (To Download ADB)

INSTALLATION

1.  Extract ADB/platform-tools_r29.0.4-windows to C:

2.  Extract scrcpy-win64-v1.2 to C: (Overwrite Files)

3.  Enable Developer Option on Android by clicking Build number 5 times

4.  Enable USB debugging on Android

5.  Connect Android via USB

6.  Allow USB debugging permission when USB is connected

7.  On computer on CMD

8.  Enter: cd ..

9.  Enter: cd ..

10.Enter: cd adb

11.Enter: adb devices

12.Enter: scrcpy

BATCH FILE IN ADB FOLDER (STEP ONE TO CREATE SHORTCUT)

1.  Create new Text Document in C:ADB folder

2.  Enter:

cd c:\adb

adb devices

scrcpy

3.  Filename: scrcpy.bat  

4.  Save as Type: All Files

5.  Encoding: ANSI

BATCH FILE ON DESKTOP (STEP TWO TO CREATE SHORTCUT)

1.  Create new Text Document on Desktop

2.  Enter: start /min C:\adb\scrcpy.bat

3.  Filename: Mirror.bat  

4.  Save as Type: All Files

5.  Encoding: ANSI

Notes: The 1st video suggested merging everything in the ADB folder which I did and that's what my instructions are going by. The second video suggested creating a folder called Mirror in the C drive. Either way should work but you may have to adjust this:

2.  Enter: start /min C:\adb\scrcpy.bat
Use adb if you merged all the files together.
Change adb to mirror if you created a mirror folder for the scrcpy files
Only choose one or the other.

I haven't tried it on my Mac or other operating system, but I'll update this tutorial when I do.