Captures screen from Android device via ADB and makes a high quality GIF

android-screen-to-gif.sh

#!/bin/bash

# based on http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html
#
# How to install:
#   Install adb
#   sudo apt-get install ffmpeg
#   wget https://gist.github.com/theArtechnology/d012fdb3e46166cb1f92b81a1d956535/raw/android-screen-to-gif.sh
#   chmod a+x android-screen-to-gif.sh

# Help message
function usage() {
	cat << EOF
Captures screen from Android device via ADB and makes a high quality GIF
Usage: ./android-screen-to-gif.sh output.gif 

EOF
}

# Output file
if [[ ! "$1" ]]; then
	usage
	exit 1
fi

if ! command -v adb > /dev/null; then
    echo "Missing adb";
    exit 1
fi

if ! command -v ffmpeg > /dev/null; then
    echo "Missing ffmpeg";
    exit 1
fi

TMP_MP4="/tmp/android-screen-tmp.mp4"
TMP_FRAMES_DIR="/tmp/android-screen-tmp-frames"
TMP_GIF="/tmp/android-screen-tmp.gif"

# Cleanup
rm -f "$TMP_MP4"
rm -rf "$TMP_FRAMES_DIR"
rm -f "$TMP_GIF"

# Record and pull video
echo "Starting recording, press CTRL+C when you're done..."
trap "echo 'Recording stopped, downloading output...'" INT
adb shell screenrecord --bit-rate 10000000 --verbose "/sdcard/tmp-android-screen.mp4"
trap - INT
sleep 5
adb pull "/sdcard/tmp-android-screen.mp4" "$TMP_MP4"
sleep 1
adb shell rm "/sdcard/tmp-android-screen.mp4"

# Convert to gif
echo "Convert to gif..."

palette="/tmp/palette.png"

filters="fps=50,scale=320:-1:flags=lanczos"

echo "Getting frames..."

ffmpeg -v warning -i "$TMP_MP4" -vf "$filters,palettegen" -y $palette
echo "Almost done..."

ffmpeg -v warning -i "$TMP_MP4" -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y "$1"

echo "Completed: $HOME/$1";


exit 0