How to mirror phone screen using ADB Sideload?

Question

Information:

• Windows: 10
• Smartphone: Alcatel Pixi 4 5" 5045J (Rooted)
• ADB version: 1.0.39
• USB debugging is enabled.

Problem:

The screen to my phone is damaged and ring does not work. I would like to mirror the phone screen on the PC, but I could not. Informs that the dialogue must be confirmed:

Image - Allow USB debugging? I can not confirm this. The screen touch does not work, neither does the mouse. Only the side keys of the phone work

Questions:

• Using the phone's recovery mode, would it be possible to mirror the Android screen on the PC?
• Can I use Sideload to allow USB debugging access to ADB? To not need to confirm the dialog.
• Do you have any idea what I can do?

Answer 1

Use following command to mirror your device on computer using ADB

adb shell "while true; do screenrecord --output-format=h264 -; done" | ffplay -framerate 60 -probesize 32 -sync video -

More info can be found here : https://knowitlabs.no/mirroring-your-android-display-to-mac-or-linux-20b2a7043f85