twitch screenshare with audio streamer script.

twitch.sh

STREAM_KEY=""
STREAM_URL="rtmp://live.twitch.tv/app"
OUTPUT="$STREAM_URL/$STREAM_KEY"

#OUTPUT="out.flv"
#rm "out.flv"

DEVVID="x11grab"
FPS=25
VIDIN="hd1080"
VIDOUT="hd720"
VIN=":0.0"

AIN="hw:3,0" # hw:0,0
DEVAUD="alsa"
CHAN="1"

VC="libx264"
VT="4"
VB="2000k"
VBMIN="1000k"

AC="libmp3lame"
AB="192k"
MIN="300"
AQ="3"
AR="44100"

ffmpeg \
-f $DEVVID -framerate $FPS -video_size $VIDIN -i $VIN \
-f $DEVAUD -ac $CHAN -i $AIN \
-c:v $VC -b:v $VB -threads $VT -video_size $VIDOUT -preset "ultrafast" \
-g 50 -minrate $VBMIN -maxrate $VB -pix_fmt yuv420p \
-c:a $AC -b:a $AB -q:a $AQ -ar $AR  -strict normal \
-f flv $OUTPUT