#!/bin/bash
# Fugly script to use ffmpeg to capture a given window

INFO=$(xwininfo -frame)

WIN_GEO=$(echo $INFO | grep -oEe 'geometry [0-9]+x[0-9]+' | grep -oEe '[0-9]+x[0-9]+')
WIN_XY=$(echo $INFO | grep -oEe 'Corners: \+[0-9]+\+[0-9]+' | grep -oEe '[0-9]+\+[0-9]+' | sed -e 's/\+/,/')
WIN_X=$(echo $WIN_GEO | cut -d "x" -f 1 | awk '{print $1+$1%2}')
WIN_Y=$(echo $WIN_GEO | cut -d "x" -f 2 | awk '{print $1+$1%2}')

ffmpeg -f alsa -ac 1 -i pulse -f x11grab -r 30 -s ${WIN_X}x${WIN_Y} -i :0.0+${WIN_XY} -vcodec libx264 -vpre lossless_ultrafast -acodec libmp3lame ${HOME}/screencast-$(date +%F-%H-%M-%S).mkv