[gstreamer-bugs] [Bug 625520] New: dc1394src: timestamping problem

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=625520
  GStreamer | gst-plugins-bad | git

           Summary: dc1394src: timestamping problem
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: le.businessman at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


To reproduce (more likely to manifest itself with multiple cameras at once):

Start a few pipelines as follows:
GST_DEBUG=2 gst-launch -v dc1394src camera-number=0 ! video/x-raw-grayscale,
framerate=15/1 ! ffmpegcolorspace ! xvimagesink

GST_DEBUG=2 gst-launch -v dc1394src camera-number=1 ! video/x-raw-grayscale,
framerate=15/1 ! ffmpegcolorspace ! xvimagesink

The video will get very choppy and you'll start to see a lot of these warnings:

WARNING: from element /GstPipeline:pipeline0/GstXvImageSink:xvimagesink0: A lot
of buffers are being dropped.
Additional debug info:
gstbasesink.c(2597): gst_base_sink_is_too_late ():
/GstPipeline:pipeline0/GstXvImageSink:xvimagesink0:
There may be a timestamping problem, or this computer is too slow.

Note that if xvimagesink has its sync property set to false, this bug will not
show up. Nevertheless it seems like it's a legitimate timestamping problem.

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