#!/bin/sh

#check if microphone is enabled and soundcard captures
cap=`amixer get Capture | grep -c '\[off\]'`
if [ $cap -gt 0 ]; then
        echo "microphone not enabled"
        exit 1
fi

# select window and get position
echo 'Please select the window you want to record'
tmp=`mktemp`
xwininfo >$tmp
posx=`grep 'Absolute upper-left X:' $tmp | cut -d':' -f2 | tr -d ' '`
posy=`grep 'Absolute upper-left Y:' $tmp | cut -d':' -f2 | tr -d ' '`
width=`grep 'Width:' $tmp | cut -d':' -f2 | tr -d ' '`
height=`grep 'Height:' $tmp | cut -d':' -f2 | tr -d ' '`
rm $tmp

# start recording
#ffmpeg -f x11grab -r 25 -s ${width}x${height} -i :0.0+${posx},${posy} -f alsa -ac 1 -ar 44100 -i default:CARD=PCH -c:v libx264 -crf:v 0 -preset:v ultrafast -c:a flac grab.mkv

# pulseaudio: micro and system sound
ffmpeg -f x11grab -r 25 -s ${width}x${height} -i :0.0+${posx},${posy} \
        -f pulse -i default \
        -f pulse -i alsa_output.pci-0000_00_1b.0.analog-stereo.monitor \
        -map 0:0 -map 1:0 -map 2:0 \
        -c:v libx264 -crf:v 0 -preset:v ultrafast \
        -c:a flac \
        -c:a flac \
        grab.mkv