[Live-devel] AAC Streaming Via Darwin

[Ross Finlayson]

>I am attempting to stream AAC audio (from an encoder) using live555 
>libraries through a Darwin Streaming Server.

A reminder once again: You don't need to use a separate 'Darwin' 
server.  We have our own RTSP server implementation which you could 
use instead.

However...

>I think I have configured everything properly, but I get the error 
>'MPEG4GenericRTPSource Warning

Why are you creating a "RTPSource" at all??  "RTPSource" objects are 
used to *receive* RTP streams.  Because you are transmitting a RTP 
stream, not eceiving one, you use a "RTPSnk" - specifically, in this 
case a "MPEG4GenericRTPSink".

>audioSink = SimpleRTPSink::createNew(*env, &rtpGroupsockAudio, 97, 
>44100, "audio", "mpeg4-generic", 2);

Don't use a "SimpleRTPSink", instead use a "MPEG4GenericRTPSink"; 
that was specifically designed for streaming AAC audio.  Pass "audio" 
as the "sdpMediaTypeString" parameter, and "AAC-hbr" as the 
"mpeg4Mode" parameter.

(Once again, if you'd used our RTSP server implementation, then a lot 
of this work would already be done for you.)


	Ross Finlayson
	Live Networks, Inc. (LIVE555.COM)
	<http://www.live555.com/>