screenrec.sh
1#!/bin/sh
2
3# use xrectsel to define region
4geo=$(xrectsel "%x %y %w %h")
5
6# record region on screen using backgrounded ffmpeg
7ffmpeg \
8 -video_size $(echo $geo | awk {'print $3 "x" $4'}) \
9 -framerate 25 \
10 -f x11grab \
11 -i $(echo $geo | awk {'print ":0.0+" $1 "," $2'}) \
12 -y output.mkv &
13
14# store ffmpeg pid
15ffmpeg_pid=$!
16
17# run xrectdraw to indicate region being recorded
18xrectdraw $geo \#ff0000 2:2:5:2
19
20# when xrectdraw dies kill ffmpeg
21kill $ffmpeg_pid
