ffmpeg x11grab를 이용한 스크린 캡쳐

screen-caputre.sh

#!/bin/sh

OUTFILE=$1
if [ -z $OUTFILE ]
then
    OUTFILE='out.mp4'
fi

XWININFO=$(xwininfo -frame)
WINDOW_RES=$(echo $XWININFO | perl -ne 'print $1 if /geometry\s+(\d+x\d+)/')
CORNERS=$(echo $XWININFO | perl -ne 'print "$1,$2" if /Corners:\s+([+]\d+)([+]\d+)/')


ffmpeg -y -f alsa -i pulse -f x11grab -s "$WINDOW_RES" -i ":0.0$CORNERS" -r 60 \
-vcodec libx264 -preset ultrafast -crf 18 -acodec libmp3lame -b:a 160k "$OUTFILE"