[Bug 794762] New: rtpbin: updating ts_offset often cause audio glitches when using ntp-sync=true

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=794762

            Bug ID: 794762
           Summary: rtpbin: updating ts_offset often cause audio glitches
                    when using ntp-sync=true
    Classification: Platform
           Product: GStreamer
           Version: 1.14.0
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: danny.smith at axis.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Following the procedure outlined in the pdf below we have encountered audio
glitches in our audio receivers. Have tracked it down to that constantly
updating the ts_offset in the rtpbin results in glitches when streaming audio
using ntp-sync=true. Seems to be related to jittery behaviour in the
local/remote clock causing the ts_offset to be updated often with very small
changes (<100 microseconds) which in turn causes the alsasink to jump around in
its audio buffer.

https://gstreamer.freedesktop.org/data/events/gstreamer-conference/2015/Sebastian%20Dr%C3%B6ge%20-%20Synchronised%20multi-room%20media%20playback%20and%20distributed%20live%20media%20processing%20and%20mixing%20with%20GStreamer.pdf

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