<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Note that this mailing list is specifically for questions about/discussion of the "LIVE555 Streaming Media" software. It is not intended for general questions about RTSP, RTP or RTCP. If your organization is interested in hiring me as a consultant/technical advisor for general architectural issues regarding streaming media, RTSP/RTP/RTCP etc., then please contact me via separate email.<div><br></div><div><br></div><div>Nonetheless...<br><div><blockquote type="cite">So I send two SETUP commands to the server:<br><br>SETUP <a href="rtsp://some.url/trackID=1">rtsp://some.url/trackID=1</a> RTSP/1.0<br>CSeq: 4<br>User-Agent: LibVLC/2.1.3 (LIVE555 Streaming Media v2014.01.21)<br>Transport: RTP/AVP/TCP;unicast;interleaved=0-1<br></blockquote><div><br></div>If you are using VLC (or 'LibVLC') as your RTSP client, then the RTSP protocol exchange, and RTP/RTCP packet reception and media rendering is taken care of automatically. You do not need to know or care about the specific details of how this all works.</div><div><br></div><div>But if instead you are developing your own RTSP client application - that doesn't use 'LibVLC' - then you should not include a false "User-Agent:" header that claims otherwise. (If you're not using the "LIVE555 Streaming Media" software - or VLC/LibVLC, which uses the "LIVE555 Streaming Media" software, then you definitely should not be claiming to be using it, because "LIVE555" is a trademark of "Live Networks, Inc.".)</div><div><br></div><div><br></div><div><blockquote type="cite">When I was playing around with just the FIRST (video) SETUP command (without the audio SETUP), I observed messages in RTP payload for BOTH channel# = 0 AND channel# = 1, although I don’t know what the latter data was for.<br></blockquote><div><br></div>The 'odd-numbered' channels are for RTCP packets. Again, if you're using the "LIVE555 Streaming Media" software (or VLC/'LibVLC'), then RTCP is implemented automatically, and you don't need to care about it. But again, if you're *not* using the "LIVE555 Streaming Media" software, then this mailing list is not appropriate.</div><br></div><div apple-content-edited="true"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; ">Ross Finlayson<br>Live Networks, Inc.<br><a href="http://www.live555.com/">http://www.live555.com/</a></span></span>
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