Captures screen from Android device via ADB and makes a 180x320 GIF

android-screen-to-gif.sh

#!/bin/bash

# How to install:
#   exo-open "http://developer.android.com/sdk/index.html#Other"
#   for linux users
#   sudo apt-get install libav-tools imagemagick 
#   for mac users
#   brew install libav
#   wget https://gist.githubusercontent.com/lorenzos/e8a97c1992cddf9c1142/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 converts it to a 180x320 GIF.
Usage: ./android-screen-to-gif.sh output.gif 

EOF
}

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

# Create frames
echo "Extracting frames..."
mkdir -p "$TMP_FRAMES_DIR"
avconv -i "$TMP_MP4" -pix_fmt rgb24 -s 180x320 "$TMP_FRAMES_DIR/%03d.png"

# Convert to GIF
echo "Converting to GIF..."
convert -loop 0 "$TMP_FRAMES_DIR/*.png" "$TMP_GIF"
convert -layers Optimize "$TMP_GIF" "$1"

exit 0