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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'>Thanks that explains it, the last firmware upgrade allows us to disable audio. <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'>The PTS still jumps even for video only, do I need to explicitly request sync of the video stream when I only want video?<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'>One last question, does sync offset the PTS and allow it to appear as if it is the same ntp stamp as the receiver?<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 9:56 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 10:09 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"'>While I thought this was working before for me it is definitely always returning false at the moment. I am trying to track this down to see what I may have done to break this but I cannot figure out how the variable it returns ever gets set. It is constructed false and passed on in each MultiFramedRTPSource::doGetNextFrame1(). <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'> <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"'>So how does this get set?<o:p></o:p></span></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>It gets set by the RTP receiving code, when it receives RTCP "SR" packets.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>If, however, the RTP receiving code doesn't receive any RTCP "SR" packets (e.g., because the sender does not implement RTCP), then "hasBeenSynchronizedUsingRTCP()" will never return True.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><span class=apple-style-span><span style='font-size:11.5pt;font-family:"Calibri","sans-serif"'>Rtsp connected to H264 stream from a security camera. Stream plays fine in VLC, recorded video is ok, but never ever syncs and I wanted to use that sync to trigger the beginning of recording . </span></span><o:p></o:p></p></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>Does your camera stream audio as well as video? If it streams only video, then I'm not sure what 'syncs' could mean.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>If, however, your camera streams both audio and video, then it must implement RTCP, otherwise receiving client will never be able to synchronize audio and video.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>So in short: Does your camera send RTCP packets?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><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>