Streaming to twitch using ffmpeg

rectool.sh

#!/bin/bash

WIDTH=1280
HEIGHT=720

XPOS=1500
YPOS=200

read KEY < ~/.twitch_key
URL="rtmp://live-prg.twitch.tv/app/$KEY"
#URL="test.flv"
function stream {
    ffmpeg \
        -f pulse -ac 2 -ar 44100 -i alsa_output.pci-0000_00_1b.0.hdmi-stereo.monitor \
        -f pulse -ac 2 -ar 44100 -i alsa_input.pci-0000_00_1b.0.analog-stereo \
        -filter_complex amix=inputs=2 \
        -f x11grab -r 30 -s "$WIDTH"x"$HEIGHT" -i :0.0+$XPOS,$YPOS \
        -vcodec libx264 -preset fast -maxrate 2000 \
        -acodec libmp3lame -ar 44100 -q:a 1 \
        -pix_fmt yuv420p -loglevel error -f flv "$URL" 
}

case $1 in
    "resize")
        xdotool getactivewindow windowmove $XPOS $YPOS \
                                windowsize $WIDTH $HEIGHT
        ;;
    "center")
        WINWIDTH=$(xwininfo -id $(xdotool getactivewindow) \
                                        | awk '/Width/ {print($2)}')
        WINHEIGHT=$(xwininfo -id $(xdotool getactivewindow) \
                                        | awk '/Height/ {print($2)}')
        xdotool getactivewindow windowmove \
                                $(( XPOS + (WIDTH - WINWIDTH) / 2 )) \
                                $(( YPOS + (HEIGHT - WINHEIGHT) / 2 ))
        ;;
    "stream")
        stream
        ;;
esac