<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt">Thanks Ross for your prompt reply!<br><br>> It wasn't clear to me from your description exactly how you are transmitting the stream that you are trying<br>> to receive/play, but if you want to receive/play a stream using only a SDP description, then the stream must<br>> be multicast, not unicast. I.e., the following line in the SDP description is the problem:<span style="font-family: monospace;"><br><br>> </span>>c=IN IP4 0.0.0.0<span style="font-family: monospace;"><br><br></span>The line of "c=IN IP4 0.0.0.0" in the sdp file was manually added by myself to the original sdp file created<span style="font-family: monospace;"><br></span>by MP4Box since the original one didn't make mplayer work. Sorry about that causing you confused.<br><br>From your above-mentioned description, If
I understand correctly, the stream must be multicast, not unicast.<br>Otherwise your program would stop proceeding. But in my sdp file, it doesn't specificy it is via multicast or<br>unicast, just UDP and its port number. Do I have to specificy it in my sdp file?<br><br>> Does your server support RTSP? If so, then you should play the stream using a "<a href="rtsp://%22">rtsp://"</a> URL, rather than<br>> by reading a SDP description directly.<br><br>My application scenario is that one server send stream via multicast to the clients using mplayer to receive <br>streaming videos. I have a simple video server to send mp4 video file out on a multicast address. I just have MP4Box to be used for generating sdp files. Do you think its created one is compatible with your program?<span style="font-family: monospace;"><br><br></span>> If your server doesn't support RTSP, then you will need to change it to stream via multicast, and generate<br>> a new
SDP description that<span style="font-family: monospace;"> </span>contains the IP multicast address in the "c=" line.<br><div>Why it is required of the "c=" line again?<br><br>Thank you again!<br></div></div><br>
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