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SDP (session description protocol) file

Hoang Hai
Greenhorn

Joined: Dec 02, 2001
Posts: 8
Hi everybody,
I'm working with streaming audio, so I need to create a SDP file for every transmission.
I haven't found a tool in the JMF API documentation to do this.
Could any one tell me how to do it ?
Thanks in advance
Hoang Hai
Greenhorn

Joined: Dec 02, 2001
Posts: 8
I post this for my specific case: use JMF to send/receive media streams and Darwin Streaming Server as an intermediate broadcaster.
I just work out a little how to create SDP file that DSS4 and QuickTime player can use to reflect my stream (just the JMF audio rtp transmitter is my own built application ;( )
SDP file : e.g : port6k.sdp
c=IN IP4 127.0.0.1
m=audio 6000 RTP/AVP
that will work in conditions :
1. audio stream format is those of DVI4(Mono, 8000/11025/22050Hz), ULAW2:1 8000Hz, Mono.
2.the transmitter send rtp audio streams of the above formats to port 6000 (this value is not important, you can change but should not cause conflict to known ports )
3. the sdp file must be placed in the movie directory (/usr/local/movies/ by default )
4. till now, I'm just able to play the reflected stream by QuickTime player or via an EMBED tag in a webpage that reference to the sdp above.
for QT player :
open URL :
rtsp://DSSdomain/port6k (the sdp file name, the extension .sdp is not important and obmittable )
But this is hand-editing, I'd like to know if there's a professional way to create SDP file ( use the sdp package of JMF )
thanks
 
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subject: SDP (session description protocol) file
 
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