【单选题】
A 1、<P>v=0 <BR>o=-2968742731INIP410.11.0.43 <BR>s=envivio <BR>c=INIP410.11.0.35 <BR>t=00 <BR>m=video9800udp33 <BR>a=control:trackID=2 <BR>a=rtpmap:33MP2T/90000 <BR>a=x-videocodec:H264 <BR>a=range:npt=0 <BR></P>
B 2、<P>v=0 <BR>o=-2968742731INIP410.11.0.43 <BR>s=envivio <BR>c=INIP410.11.0.35 <BR>t=00 <BR>m=video8200udp33 <BR>a=control:trackID=2 <BR>a=rtpmap:33MP2T/90000 <BR>a=x-videocodec:H264 <BR>a=range:npt=0 <BR></P>
C 3、<P>v=0 <BR>o=-2968742731INIP410.11.0.43 <BR>s=envivio <BR>c=INIP4225.1.1.1 <BR>t=00 <BR>m=video9800udp33 <BR>a=control:trackID=2 <BR>a=rtpmap:33MP2T/90000 <BR>a=x-videocodec:H264 <BR>a=range:npt=0 <BR></P>
D 4、<P>v=0 <BR>o=-2968742731INIP410.11.0.43 <BR>s=envivio <BR>c=INIP4225.1.1.1 <BR>t=00 <BR>m=video8200udp33 <BR>a=control:trackID=2 <BR>a=rtpmap:33MP2T/90000 <BR>a=x-videocodec:H264 <BR>a=range:npt=0 <BR></P>
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