[Live-devel] GSM and AMR

Flavio Oliveira flavyobr at yahoo.com.br
Fri May 6 18:50:26 PDT 2005


Hi,

Why does the Quicktime player require a SDP file for multicast AMR
stream? Has the SDP File informations required by AMR streaming?

Flavio

> Both GSM and AMR audio RTP streams can be played by QuickTime Player.
> 
> To stream AMR audio, see the code for the "testAMRAudioStreamer" 
> (multicast) and "testOnDemandRTSPServer" (unicast) demo applications.
> 
> To stream GSM audio, see 
> <http://lists.live.com/pipermail/live-devel/2005-April/002214.html>
> 
> If you are streaming/receiving a *multicast* stream, then you don't *need* 
> to use RTSP.  Instead, just have the media player (QuickTime Player, in 
> this case) read an appropriate SDP file.  If you are streaming/receiving a 
> *unicast* stream, then you *must* use RTSP (because a SDP description, by 
> itself, does not give the receiver enough information (about port numbers) 
> to play the stream).
> 
> However, I recommend that RTSP be used for all kinds of stream.





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