[gstreamer-bugs] [Bug 556642] New: rtpvorbispay/depay adds significant latency

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-good | Ver: HEAD CVS
           Summary: rtpvorbispay/depay adds significant latency
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: le.businessman at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.21/2.22
   GNOME milestone: Unspecified


Please describe the problem:
Using rtpvorbispay/depay as payloader and depayloader respectively adds a
latency of roughly 500ms to a gst pipeline.
I've tested using the sequencer Hydrogen as input, going into a gstreamer
pipeline (in C application) via jack, being encoded in vorbis, payloaded,
depayloaded, decoded and out again into jack and finally to the soundcard. When
compared with audio going directly from Hydrogen to the soundcard, the latency
is about 500ms.

Steps to reproduce:
gst-launch jackaudiosrc connect=0 ! vorbisenc ! rtpvorbispay ! rtpvorbisdepay !
vorbisdec ! jackaudiosink connect=0 sync=0

compare with

gst-launch jackaudiosrc connect=0 ! audioconvert ! rtpL16pay ! rtpL16depay !
audioconvert ! jackaudiosink connect=0 sync=0

Actual results:
A constant latency is added to the pipeline.

Expected results:
The audio would not be as delayed.

Does this happen every time?
Yes.

Other information:


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