I have written a simple program to stream an ADTS AAC file that I extracted from an MPEG-4 file using mp4create -extract. I based my test program off of ADTSAudioFileServerMediaSubsession and ADTSAudioFileSource. When I open the stream with VLC on my remote pc, it connects but does not decode any audio. One of the things that I am unsure of is the payloadFormatCode to use, I guessed 14 (mpa). What else am I missing here?
You're missing the fact that the static payload type 14 is used for MPEG-1 or 2 audio *only*. AAC audio must use a dynamic payload type (with the actual RTP media type designated by a "a=rtpmap:" line in the SDP description.
If you had actually used "ADTSAudioFileServerMediaSubsession" instead of just 'basing' your code on this, you probably would not have had this problem :-)
And yes, if you want VLC to play your stream, you're going to have to give VLC a SDP description. The easiest way to do this is to use RTSP. Don't fight this - our code lets you easily add a built-in RTSP server to your streaming server application, so you should just do this.
-- Ross Finlayson Live Networks, Inc. http://www.live555.com/ _______________________________________________ live-devel mailing list live-devel@lists.live555.com http://lists.live555.com/mailman/listinfo/live-devel
