[gstreamer-bugs] [Bug 541787] incorrect timestamp

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-good | Ver: 0.10.17




------- Comment #6 from Tomasz Grobelny  2008-07-07 20:06 UTC -------
(In reply to comment #3)
> Please revert, this patch is wrong. Only the jitterbuffer is able to convert
> RTP timestamps to gstreamer timestamps. A normal depayloader or decoder always
> simply copies the incomming gstreamer timestamp to the output.
> 
> See here for the documentation about how timestamps are handled in RTP:
> 
> http://webcvs.freedesktop.org/gstreamer/gst-plugins-good/gst/rtp/README?revision=1.13&view=markup
> 
It was somehow suspicious that every depayloader would have to do the same
thing over and over again. I tried using gstjitterbuffer and the results are
not what I would expect:

/pipeline0/fakesink0: last-message = "chain   ******* < (  110 bytes,
timestamp: 0:00:04.022375993, duration: none, offset: -1, offset_end: -1,
flags: 1) 0x8145a68"
/pipeline0/fakesink0: last-message = "chain   ******* < (  110 bytes,
timestamp: 0:00:04.062365698, duration: none, offset: -1, offset_end: -1,
flags: 33) 0x8145ac0"
/pipeline0/fakesink0: last-message = "chain   ******* < (  110 bytes,
timestamp: 0:00:04.082355485, duration: none, offset: -1, offset_end: -1,
flags: 1) 0x8145b18"

The difference between timestamps should be exactly 20ms and not 19,98ms or the
like. Is it by design or is it fixed in latest gstreamer version?


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