[Bug 644404] New: [rtspsrc/jitterbuffer] position increasing while buffering

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Thu Mar 10 07:38:59 PST 2011

  GStreamer | gst-plugins-good | git

           Summary: [rtspsrc/jitterbuffer] position increasing while
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: mnauw at users.sourceforge.net
         QAContact: gstreamer-bugs at lists.freedesktop.org
      GNOME target: ---
     GNOME version: ---

Jitterbuffer's buffer mode performs buffering by simulating a PAUSE using
timestamp offset (in concert with rtpbin).  The ts offset is needed as it is
only a simulation since PLAYING state is maintained, and as such running time
continues to increase.  Consequently, position reporting (derived from running
time) also increases while buffering is ongoing (and also off the mark when
resuming).  This is particularly confusing for buffer mode's primary use case,
i.e. non-live material (where position has a very specific meaning).

Unfortunately, jitterbuffer's slave mode (still?) does not handle bursts well,
unless there is some room for tweaking there ...

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