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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>OK, I reset the firmware option and did some more stepping through the code and I see the fHasBeenSynchronized being set during the noteincomingSR but then it manages to get set back to 0 before the line resultHasBeenSyncedUsingRTCP = fHasBeenSynchronized in RTPSource::noteincomeingPacket. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I am gonna sssume this is a different situation, an non sr packet. But I have not yet figured out the flow to figure out why the call to </span>hasBeenSynchronizedUsingRTCP()" always returns false<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>I see in the code all the offsets are handled, and using just the PTS has been working. I do not know what I have done to break this in my code <span style='font-family:Wingdings'>L</span> <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there documentation other than the doxygen that gives a bit more info?<span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> live-devel-bounces@ns.live555.com [mailto:live-devel-bounces@ns.live555.com] <b>On Behalf Of </b>Ross Finlayson<br><b>Sent:</b> Friday, July 29, 2011 10:40 AM<br><b>To:</b> LIVE555 Streaming Media - development & use<br><b>Subject:</b> Re: [Live-devel] hasBeenSynchronizedUsingRTCP()<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Jul 29, 2011, at 11:15 AM, Jeff Shanab wrote:<o:p></o:p></p></div><p class=MsoNormal><br><br><o:p></o:p></p><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks that explains it, the last firmware upgrade allows us to disable audio.</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> </span><o:p></o:p></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The PTS still jumps even for video only</span><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>That suggests that the camera does, indeed, send RTCP "SR" packets. See <a href="http://www.live555.com/liveMedia/faq.html#rtcp-synchronization-issue">http://www.live555.com/liveMedia/faq.html#rtcp-synchronization-issue</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><br><br><o:p></o:p></p><div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>, do I need to explicitly request sync of the video stream when I only want video?</span><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>The "hasBeenSynchronizedUsingRTCP()" function does not 'request' synchronization; synchronization happens automatically off RTCP "SR" packets are received. The "hasBeenSynchronizedUsingRTCP()" function merely tells you whether the received presentation times can be considered accurate.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><br><br><o:p></o:p></p><p class=MsoNormal><span class=apple-style-span><span style='font-size:11.5pt;font-family:"Calibri","sans-serif";color:#1F497D'>One last question, does sync offset the PTS and allow it to appear as if it is the same ntp stamp as the receiver?</span></span><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>I don't understand this question. But application code should never need to concern itself with RTP timestamps. Just work with "presentation times".<o:p></o:p></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><o:p> </o:p></p><div><p class=MsoNormal><span class=apple-style-span><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'>Ross Finlayson</span></span><span style='font-size:13.5pt;font-family:"Helvetica","sans-serif";color:black'><br><span class=apple-style-span>Live Networks, Inc.</span><br><span class=apple-style-span><a href="http://www.live555.com/">http://www.live555.com/</a></span></span> <o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>