On 2 Sep 2008 , [EMAIL PROTECTED] entreated about "freebsd-questions Digest, Vol 231, Issue 5":
> > Yes, there's a huge difference between testing differences in images and > > testing differences in files. What do you mean by "...know if the > > display is working correctly."? > > > > Andrew > > I want to determine if Mplayer is working correctly. The best way to be > sure is to check if the display on the screen is changing. That's the > purpose of the screenshots. The screenshots are taken by Nagios every 5 > minutes and the new screenshot is compared with the preceding one. But, > by now, it doesn't work because every tool we try is seeing a diffence > between 2 identical images. JPG format will always be different because of the encoding/compression. I think you need to save to an uncompressed format like BMP. Maybe PNG has a mode that will work too. BMP has no info headers, just the raw data, so that won't be affected by the time of the save (at the least). -- DA Fo rsyth Network Supervisor Principal Technical Officer -- Institute for Water Research http://www.ru.ac.za/institutes/iwr/ _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"