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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial","sans-serif";color:#222222;background:white">I would please like to ask if live555 can be used for streaming mpeg-ts over UDP (without RTP).</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal">Yes, our software can be used to send (and/or receive) Transport Stream data over raw-UDP. However, you should first ask yourself if this is something that you *really* want. Streaming over raw UDP (i.e., without RTP framing) is discouraged,
because - without RTP - you miss out on several benefits, including support for reordering out-of-order network packets, and RTCP statistics.<o:p></o:p></p>
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<p class="MsoNormal">To send Transport Stream data over raw-UDP, use a “BasicUDPSink”. If you have a RTSP server (for example, the “testOnDemandRTSPServer” demo application code for streaming a Transport Stream file “test.ts”; see “testProgs/testOnDemandRTSPServer.cpp”,
line 236), then the server will automatically deliver a Transport Stream-over-raw-UDP stream, if requested by a RTSP client. HOWEVER, there is no standard mechanism defined in RTSP for how to request a raw-UDP Transport Stream. We implement an ad hoc mechanism
that is used by many video set-top boxes. However, this is not a standard (because people should not really be streaming over raw-UDP to begin with)!<o:p></o:p></p>
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<p class="MsoNormal">To receive Transport Stream data over raw-UDP, use a “BasicUDPSource”. If you have a RTSP client (using our “RTSPClient” code), then it will automatically request a Transport Stream-over-raw-UDP stream, using an ad hoc (non-standard) mechanism,
*if* the stream’s SDP description (as returned by the RTSP “DESCRIBE” command) indicated (again, using an ad hoc, non-standard mechanism) that the stream was MPEG Transport over raw-UDP.<o:p></o:p></p>
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<p class="MsoNormal">If you are using our RTSP client code in combination with our RTSP server code, then you cannot stream over raw-UDP; instead, you will get standard streaming over RTP. Our RTSP client or server code supports MPEG Transport streaming over
raw-UDP *only if* the other side (RTSP server or client, respectively) is a non-standard server or client (not using our code) that also supports it.<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span class="apple-style-span"><span style="font-family:"Helvetica","sans-serif";color:#1F497D">Hi,<o:p></o:p></span></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span class="apple-style-span"><span style="font-family:"Helvetica","sans-serif";color:#1F497D">Thanks you very much for the detailed answer.<br>
I understand that the solution for mpeg-ts over UDP will still require usage of RTSP client-server request-response mechanism, Right ?
<br>
I'm not sure if I can use RTSP in my case, I think it is plain mpeg-ts over udp.<o:p></o:p></span></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span class="apple-style-span"><span style="font-family:"Helvetica","sans-serif";color:#1F497D">Thank you,<br>
Ran <o:p></o:p></span></span></p>
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