#!/bin/sh
# Grab a window with xwininfo
printf "Select a window to record\n"
win_info=$(xwininfo)

# Parse xwininfo output into usable parameters.
win_x=$(echo $win_info|sed -e "s/.*Absolute upper-left X: //;s/\ .*//")
win_y=$(echo $win_info|sed -e "s/.*Absolute upper-left Y: //;s/\ .*//")
win_w=$(echo $win_info|sed -e "s/.*Width: //;s/\ .*//")
win_h=$(echo $win_info|sed -e "s/.*Height: //;s/\ .*//")
win_s=$win_w"x"$win_h

printf "Sleeping for 15 seconds before recording...\n"
sleep 15

# Execute ffmpeg.
ffmpeg \
  -f alsa -i card2 \
  -f x11grab -r 30 -s $win_s -i $DISPLAY+$win_x,$win_y \
  -acodec pcm_s16le -ac 2 \
  -sameq -r 30 -s $win_s \
  $1