Screen Record for Android

getdeviceart.sh

#! /bin/bash

mkdir -p ./backgrounds


function get_google_device_art {
  local device=$1
  # Get the Google Device backgrounds
  curl "https://developer.android.com/distribute/marketing-tools/device-art-resources/$1/port_back.png" > "./backgrounds/$1_port_back.png"
  curl "https://developer.android.com/distribute/marketing-tools/device-art-resources/$1/port_fore.png" > "./backgrounds/$1_port_fore.png"
  curl "https://developer.android.com/distribute/marketing-tools/device-art-resources/$1/port_shadow.png" > "./backgrounds/$1_port_shadow.png"
}


get_google_device_art 'nexus_5x' 
get_google_device_art 'nexus_6'
get_google_device_art 'nexus_6p'
get_google_device_art 'nexus_9'
get_google_device_art 'pixel'
get_google_device_art 'pixel_xl'
get_google_device_art 'pixel_2'
get_google_device_art 'pixel_2_xl'

screenrecord.sh

if [ -z "$1" ]; then
  shot_path=$(date +%Y-%m-%d-%H-%M-%S).mp4
else
  shot_path="$*"
fi

ffmpeg="ffmpeg"
# Get the device id lower case it.
device=$(adb shell getprop ro.product.model | sed 's/ /_/g' | tr '[:upper:]' '[:lower:]')
background_frame="./backgrounds/${device}_port_back.png"
foreground_frame="./backgrounds/${device}_port_fore.png"
shadow_frame="./backgrounds/${device}_port_shadow.png"

trap ctrl_c INT

function ctrl_c() {
  echo "** Trapped CTRL-C"
  echo "** Downloading screencast"
  sleep 2
   
  adb shell am broadcast -a com.android.systemui.demo -e command exit
  adb pull /sdcard/Movies/$shot_path .

  echo "FFMPEG Location: ${ffmpeg}"
  echo "Device frame location: ${frame}"
  echo "Device foreground location: ${forground_frame}"
  echo "Device background location: ${background_frame}"
  echo "Device shadow location: ${shadow_frame}"

  if [ -x $(which "$ffmpeg") ] && [ -e "$background_frame" ]
  then
    echo "Rendering images with background"
    $ffmpeg -y \
      -f lavfi \
      -i color=c=white:s=3840x1800 \
      -i $shadow_frame \
      -i $background_frame \
      -i $shot_path \
      -i $foreground_frame \
      -filter_complex "[1:v]scale=920:-1[shadow]; \
                      [2:v]scale=920:-1[frame]; \
                      [3:v]scale=720:-1[video]; \
                      [4:v]scale=920:-1[sheen]; \
                      [0:v][shadow]overlay=shortest=1:x=(main_w-overlay_w)/2:y=(main_h-overlay_h)/2[background]; \
                      [background][frame]overlay=x=(main_w-overlay_w)/2:y=(main_h-overlay_h)/2[phone]; \
                      [phone][video]overlay=x=(main_w-overlay_w)/2:y=(main_h-overlay_h)/2[merged]; \
                      [merged][sheen]overlay=x=(main_w-overlay_w)/2:y=(main_h-overlay_h)/2" $shot_path-frame.mp4

    $ffmpeg -y -i $shot_path-frame.mp4 -vf fps=10,scale=320:-1:flags=lanczos,palettegen $shot_path-palette.png
    $ffmpeg -i $shot_path-frame.mp4 -i $shot_path-palette.png -filter_complex "fps=30,scale=720:-1:flags=lanczos[x];[x][1:v]paletteuse" $shot_path.gif
  fi
  
  alldone
}

function setup() {
   adb shell settings put global sysui_demo_allowed 1
   adb shell am broadcast -a com.android.systemui.demo -e command network -e mobile show -e datatype lte -e level 4
   adb shell am broadcast -a com.android.systemui.demo -e command battery -e level 100 -e plugged false
   adb shell am broadcast -a com.android.systemui.demo -e command network -e wifi show -e level 4
   # Tweak this if you want the clock to changed
   adb shell am broadcast -a com.android.systemui.demo -e command clock -e hhmm 0440
   # Remove this if you want notifications to be availalbe
   adb shell am broadcast -a com.android.systemui.demo -e command notifications -e visible false
   echo When finished, run: adb shell am broadcast -a com.android.systemui.demo -e command exit
}

function alldone() {
  adb shell am broadcast -a com.android.systemui.demo -e command exit
}

setup

adb shell screenrecord --bit-rate 16000000 /sdcard/Movies/$shot_path

echo "Finished"

Fixing the ffmpeg script

What's the purpose of all the adb shell am broadcast -a com.android.systemui.demo -e command exit? There are 2 calls and an echo that says to run that command after you're done.

AFAICT, you do that cleanup when alldone gets called.

The ADB shell commands set up demo mode so you can take the battery status etc.

The final one in the echo i think is just me being lazy not cleaning up the code as in the first version you had to run it manually.

@PaulKinlan
Hi Guys I have study your script which is very useful for my android screen recording but I have few doubts If you can clear please
1- If I am using this for a long like half an hrs, I feels device very leggy so I think its using system resources heavily.
2- I have noticed one more thing. when I ran it, Battery charging getting stopped (only charging symbol) but actually charging is happening, Why Its showing battery charging disable.
3- Here we are using android adb commands will these command works on all the android versions.
4- Why its not recording for a long time like 2 hrs or 5 hrs.
One Question
Is there any way by which we can stop android device charging in real so that device battery will not bulged.