[gstreamer-bugs] [Bug 632386] New: Unable to capture from second screen

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Sun Oct 17 12:01:59 PDT 2010


https://bugzilla.gnome.org/show_bug.cgi?id=632386
  GStreamer | gst-plugins-good | 0.10.30

           Summary: Unable to capture from second screen
    Classification: Desktop
           Product: GStreamer
           Version: 0.10.30
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: bigwhale at lubica.net
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


I think I stumbled upon a bug in ximagesrc. I am using Ubuntu 10.10 with
all the lastest patches and the latest driver included in the distro.
I have two screens, with resolutions 1600x1200 and 1680x1050. Second
screen is placed left of the first one and I use it as a primary screen.

I tried to record my desktop with:

gst-launch ximagesrc startx=1680 starty=0 endx=3280 endy=1200 \
use-damage=0 ! ffmpegcolorspace ! x264enc ! matroskamux ! \
filesink location="test.mkv"

The result was a video with resolution 3280x1200 and both screens were
recorded. After some experimenting I noticed that this command line
works as it should:

gst-launch ximagesrc startx=1680 starty=0 endx=3278 endy=1198 \
use-damage=0 ! ffmpegcolorspace ! x264enc ! matroskamux ! filesink \
location="test.mkv"

In this case the result was a video with the resolution of 1598x1198.

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