[Freeswitch-users] Video only call

[Limit]

Good day!

I'am experimenting with SIP video calls (using VP8 video codec). 
Ordinary audio+video calls works very well (audio recordered and video
passed through). But if I try to make only video call, i.e. SDP contains
only video media, than I got an error and channels hang up:

2013-10-31 17:00:38.494743 [DEBUG] sofia.c:5708 Channel
sofia/internal/sip:1008 at 10.10.104.125:10018 entering state [ready][200]
2013-10-31 17:00:38.494743 [DEBUG] sofia_glue.c:5382 Video Codec Compare
[VP8:99]/[H264:97]
2013-10-31 17:00:38.494743 [DEBUG] sofia_glue.c:5382 Video Codec Compare
[VP8:99]/[VP8:99]
2013-10-31 17:00:38.494743 [ERR] sofia_glue.c:3025 No audio codec available
2013-10-31 17:00:38.494743 [DEBUG] sofia_glue.c:2975 Set VIDEO Codec
sofia/internal/sip:1008 at 10.10.104.125:10018 VP8/90000 0 ms
2013-10-31 17:00:38.514745 [ERR] sofia.c:6464 RTP Error!
2013-10-31 17:00:38.514745 [NOTICE] sofia.c:6465 Hangup
sofia/internal/sip:1008 at 10.10.104.125:10018 [CS_CONSUME_MEDIA]
[DESTINATION_OUT_OF_ORDER]
2013-10-31 17:00:38.514745 [DEBUG] switch_channel.c:3130 Send signal
sofia/internal/sip:1008 at 10.10.104.125:10018 [KILL]

Incoming SDP information looks like this:

v=0
o=- 1383224434 1 IN IP4 10.10.104.125
s=Test/2.0beta263
c=IN IP4 10.10.104.125
t=0 0
m=video 5000 RTP/AVP 31 34 110 109 102 103 96 108 107
b=AS:768
b=AS:768000
a=rtpmap:31 h261/90000
a=fmtp:31 CIF=1;QCIF=1
a=rtpmap:34 H263/90000
a=fmtp:34 F=1;CIF=1;CIF16=1;CIF4=1;maxbr=7680;QCIF=1;SQCIF=1
a=rtpmap:110 H263-1998/90000
a=fmtp:110 D=1;F=1;I=1;J=1;CIF=1;CIF16=1;CIF4=1;maxbr=7680;QCIF=1;SQCIF=1
a=rtpmap:109 H264/90000
a=fmtp:109 max-fs=9000;max-mbps=270000;profile-level-id=428028
a=rtpmap:102 H264/90000
a=fmtp:102
packetization-mode=1;max-fs=9000;max-mbps=270000;profile-level-id=428028
a=rtpmap:103 H264/90000
a=fmtp:103
packetization-mode=1;max-fs=9000;max-mbps=270000;profile-level-id=640028
a=rtpmap:96 raw/90000
a=fmtp:96
rate=90000;height=288;width=352;colorimetry=BT601-5;depth=8;sampling=YCbCr-4:2:0
a=rtpmap:108 X-MX-VP8/90000
a=fmtp:108 x-mx-max-size=1920x1200
a=rtpmap:107 VP8/90000
a=fmtp:107 max-fs=9000
a=rtcp-fb:* pli fir tmmbr tstr

freeswitch local SDP:

v=0
o=FreeSWITCH 1383203862 1383203863 IN IP4 10.10.104.125
s=FreeSWITCH
c=IN IP4 10.10.104.125
t=0 0
m=video 32038 RTP/AVP 98 99
a=rtpmap:98 H264/90000
a=fmtp:98
packetization-mode=1;max-fs=9000;max-mbps=270000;profile-level-id=640028
a=rtpmap:99 VP8/90000
a=fmtp:99 max-fs=9000

and remote SDP:

v=0
o=- 1383224434 1 IN IP4 10.10.104.125
s=SimpleOPAL/3.12.7
c=IN IP4 10.10.104.125
t=0 0
m=video 5002 RTP/AVP 99
b=AS:16000
b=AS:16000000
a=rtpmap:99 VP8/90000
a=fmtp:99 max-fs=9000
a=rtcp-fb:* pli fir tmmbr tstr



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