> I am trying to record the audio from a Polycom Telepresence m100 SIP software
> client.
>
> On 10.0.71.24 I run a software VTC client configure to use SIP (Polycom
> Telepresence m100).
> The URI is sip:10.0.71.24@10.0.71.24
>
> On 10.0.71.109 I run the live555 command line tool playSIP calling 10.0.71.24.
>
> playSIP creates only a zero length file named: audio-PCMU-1
>
> Any advice?
The problem here is that our SDP parsing code currently only notes the first
RTP payload format number in a SDP "m=" line (because our RTP processing code
currently doesn't handle more than one RTP payload format code being used in a
RTP stream). Your server's SDP "m=" line is
m=audio 8000 RTP/AVP 118 115 114 113 99 98 97 102 101 103 9 15 0 8 119
>
which is legal, but our code would be able to handle it if the "0" (i.e., PCMU)
payload format code were first - e.g.
m=audio 8000 RTP/AVP 0 118 115 114 113 99 98 97 102 101 103 9 15 8 119
because "0" (i.e., PCMU) RTP payload format happens to be the only RTP payload
format that's used in this stream.
Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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