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#!/bin/sh
# record - record an area of the screen
lock="/tmp/record.lock"
# dependencies: ffmpeg, hacksaw (part), xwininfo & lsw (window), xdotool (active)
# optional:
# - hacksaw: part
# - xwininfo, lsw, commander: window
# - xdotool: active
# - xdg-user-dir
audio=
# $1: width
# $2: height
# $3: x
# $4: y
# $5: output dir
# $6: output name
record_cmd()
{
if [ -f "$lock" ]
then
>&2 printf 'already recording, please stop recording first\n'
exit 1
else
touch "$lock"
fi
herbe "started recording." &
w=$(($3 + $3 % 2))
h=$(($4 + $4 % 2))
ffmpeg $audio \
-v 16 \
-r 30 \
-f x11grab \
-s "${w}x${h}" \
-i ":0.0+$1,$2" \
-preset slow \
-c:v h264 \
-pix_fmt yuv420p \
-crf 20 \
"$5/$6.mp4"
printf '%s\n' "$5/$6.mp4"
rm -f "$lock"
herbe "stopped recording." &
}
if [ -d "$1" ]
then
dir="$1"
shift
else
dir="$(which xdg-user-dir > /dev/null 2>&1 && xdg-user-dir VIDEOS)"
[ "$dir" ] && dir="$dir/records" || dir="$HOME/vids/records"
fi
mkdir -p "$dir"
if [ "$1" = "-a" ]
then
audio="-f pulse -ac 2 -i default"
shift
fi
if [ "$1" = "-l" ]
then
find vids/records/ -type f | sort | tail -n 1
exit
fi
current=$(date +%F_%H-%M-%S)
[ "$1" ] && option="$1" || option="$(printf 'active\nwindow\npart\nstop\nfull\naudio' | commander -c)"
case "$option" in
active)
record_cmd $(xwininfo -id "$(xdotool getactivewindow)" |
sed -e '/Absolute\|Width:\|Height:/!d;s/.*:\s*//' | tr '\n' ' ') $dir $current
;;
window)
winid="$(lsw | commander -cxl | cut -d' ' -f1)"
[ "$winid" ] || exit 1
values="$(xwininfo -id "$winid" | sed -e '/Absolute\|Width:\|Height:/!d;s/.*:\s*//' | tr '\n' ' ')"
[ "$values" ] || exit 1
record_cmd $values $dir $current
;;
part)
hacksaw | {
IFS=+x read -r w h x y
record_cmd $w $h $x $y $dir $current
}
;;
stop) kill "$(pgrep ffmpeg | xargs ps | grep 'x11grab' | awk '{print $1}')"; rm -f "$lock" ;;
full) record_cmd 0 0 1920 1080 $dir $current ;;
audio) $0 -a; exit ;;
help|*) >&2 printf 'record [dir] (active|window|part|stop|full)\n' ;;
esac
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