Hi,

2011/4/12 Alexsander Petry <alexsanderpe...@gmail.com>:
> The sdp of answer:
>
>    v=0
>    o=2081 1298903400 1910755662 IN IP4 192.168.46.124
>    s=A_converstion
>    c=IN IP4 192.168.46.124
>    t=0 0
>    m=audio 9000 RTP/AVP 18
>    a=rtpmap:18 G729/8000
>    a=ptime:20
>    a=fmtp:18 annexb=no
>    m=video 0 RTP/AVP 99 34 102
>    a=direction:active
>
> Sofia reported: sdp_rtpmap_t of sdp_media_t (sdp_media_t -> sdp_rtpmap_t):
>  (media audio)
>  rm_pt:18; rm_encoding:G729; rm_rate:8000; rm_fmtp:annexb=no;
> rm_params:(NULL)
>  (media VIDEO)
>  rm_pt:99; rm_encoding:""; rm_rate:(NULL); rm_fmtp:(NULL); rm_params:(NULL)
>  rm_pt:34; rm_encoding:H263; rm_rate:90000; rm_fmtp:(NULL); rm_params:(NULL)
>  rm_pt:102; rm_encoding:""; rm_rate:(NULL); rm_fmtp:(NULL); rm_params:(NULL)
>
> PS: rm_encoding:"" -> empty string
>
> My problem is here: Why sofia reports rm_encoding and rm_rate for payload 34
> and nothing to others?

The payload type 34 is well-known, so Sofia knows that 34 is H.263
even if there is no rtpmap line in SDP. However, 99 and 102 are not
well-known, and if there is no rtpmap, Sofia cannot invent one.

-- 
Pekka.Pessi mail at nokia.com

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