<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"><base href="x-msg://6135/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><blockquote type="cite"><div style="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-text-size-adjust: auto; -webkit-text-stroke-width: 0px; margin: 10px; font-family: verdana; font-size: 10pt; "><div><font size="2" face="Verdana"><div><font color="#969696">>> I open two clients(using vlc) at the same host connecting to the same multicast source of live555 and I found that these two clients use the same port of rtp and rtcp</font></div><div><font color="#969696"></font></div><div><font color="#969696">>Yes, of course they do, because that's what multicast means: Each packet is sent - just once -> to a single (multicast) IP address and port number. (I.e., the IP address and port number are part of the packet, and are therefore the same for each recipient.)</font></div><div><font color="#969696"></font></div><div><font color="#969696">>> I want these two clients at the same host use different port (like unicast),how can I to do?</font></div><div><font color="#969696"></font></div><div><font color="#969696">>You can't, without actually getting two separate unicast streams - one to each port.</font></div><div><font color="#969696"></font> </div><div>If so,these two clients will send RR reports to the server</div></font></div></div></blockquote>That's true only for SSM ("source-specific multicast") streams. For ASM ("any-source multicast") streams, RTCP "RR" reports are sent to the whole multicast group - not back to the server.</div><div><br><blockquote type="cite"><div style="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-text-size-adjust: auto; -webkit-text-stroke-width: 0px; margin: 10px; font-family: verdana; font-size: 10pt; "><div><font size="2" face="Verdana"><div> and these RR reports use the same 'reportSenderSSRC'.</div></font></div></div></blockquote><div>No, because each participant in the multicast session - i.e., the sender, and each of the recipients - has a different SSRC.</div></div><br><br><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; font-size: medium; "><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; font-size: medium; ">Ross Finlayson<br>Live Networks, Inc.<br><a href="http://www.live555.com/">http://www.live555.com/</a></span></span>
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