[Bug 50049] ximagesrc plugin timing off

[AlanPope]

Public bug reported:

Trying to isolate a bug in <a
href="https://launchpad.net/distros/ubuntu/+source/istanbul/">istanbul</a>
I am using gst-launch-0.10 to capture the screen using the ximagesrc
pluging. It appears to capture fine most of the time (segfaulting under
circumstances I've not yet identified, but will post separate bug for
that), except during playback it runs at more than normal speed.

I performed two tests. One recording the testcard and one recording X.
the command lines I used are below along with links to the videos. I
made sure the timecode (timeoverlay plugin)  was recorded (top left) and
the seconds on the PC clock are also displayed (top right) so you can
see that it's "off" sync.

gst-launch-0.10 -v videotestsrc num-buffers=1000 ! \
ffmpegcolorspace ! \
timeoverlay ! \
theoraenc,sharpness=2,quality=6 ! \
oggmux ! \
filesink location=testcard.ogg

http://popey.com/gstreamer/testcard.ogg

gst-launch-0.10 -v ximagesrc ! \
video/x-raw-rgb,framerate=\(fraction\)5/1 ! \
ffmpegcolorspace ! \
timeoverlay ! \
theoraenc sharpness=2 quality=6 ! \
oggmux ! \
filesink location=desktop.ogg

http://popey.com/gstreamer/desktop.ogg

Note the testcard.ogg runs okay at normal spped, the desktop.ogg does
not.

** Affects: gst-plugins-good0.10 (Ubuntu)
     Importance: Untriaged
         Status: Unconfirmed

-- 
ximagesrc plugin timing off
https://launchpad.net/bugs/50049