Use ffmpeg to capture desktop

screencapture-ffmpeg.sh

#!/bin/sh

VIDEO_DIR=${HOME}/Videos
VIDEO_TIME=`date +'%Y%m%d%H%M%S'`
VIDEO_SUFFIX=mkv
VIDEO_FILE=${VIDEO_DIR}/${VIDEO_TIME}.${VIDEO_SUFFIX}

if [ ! -e ${VIDEO_DIR} ]; then
  mkdir -p ${VIDEO_DIR}
fi

DISPLAY_SIZE=`xdpyinfo | grep 'dimensions:' | awk '{print $2}'`

echo "Save to ${VIDEO_FILE}"

#ffmpeg -f alsa -ac 2 -i pulse -f x11grab -s $DISPLAY_SIZE -r 35 -qscale 1 -i :0.0 ${VIDEO_FILE}
ffmpeg -f alsa -ac 2 -i pulse -f x11grab -s $DISPLAY_SIZE -r 35 -qscale 1 -t 0:0:10 -i :0.0 ${VIDEO_FILE}