What software can I use to take screenshots with a set interval? I'd like to take screenshots every 2 second or so. Command-line and GUI are both ok.
I'd prefer software that can also resize and compress each screenshot.
asked Jun 28, 2011 at 16:06
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2Good luck spying.– Oleh PrypinJun 28, 2011 at 20:03
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5 Answers
Install scrot and then run this:
while true; do scrot & sleep 2; done
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1This seems to take a screenshot every 2,5 seconds on my system. I'd like something more precise. Jun 28, 2011 at 16:37
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8@Seppo: use
while true; do scrot & sleep 2; done. It'll backgroundscrot(it runs scrot, but does not block until scrot is done) Jun 28, 2011 at 16:50 -
2Thanks Lekensteyn, I edited my answer based on that. I didn't think a few milliseconds would make a difference but it takes 1/2 and would take even longer on a slower disk. Therei0s a risk here that on a very slow disk with a proper 2-second gap, it would be constantly writing to disk or worse still, it would fill up all the buffers until the system ground to a halt. @Seppo make sure whatever you're doing has enough time to write to disk.– Oli ♦Jun 28, 2011 at 21:15
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watch -n2 scrot
or
while true; do scrot -d2; done
while true; do import -window root /path/to/where/you/want/to/save/`date`.png; done
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1You will need to install imagemagick for this to work. You can add a sleep command to the script to make it take the screen-shot every 2 seconds, as the question asks. Sep 13, 2011 at 16:40
As per an edit to your question:
import threading
import os
def capture(i):
i += 1
threading.Timer(2.0, capture, [i]).start()
fill = str(i).zfill(5)
os.system("scrot scrot-%s.jpg" % fill)
os.system("streamer -o streamer-%s.jpeg -s 320x240 -j 100" % fill)
capture(0)
If you want to control the number of screenshots and/or maybe their names, you could do:
for i in {1..10};do
scrot $i'.png' && sleep 1;
done
Cheers!