No video. How to get the right codec?

Asterisk Asterisk Support
1

After getting my voicemail done i want to enable video.
I have videosupport=yes set in sip.conf

But i have read that for video to work you should support a single video codec.
I have tryed several codec but my softphone application on android does not connect.

I try to figure out the supported codec of the app (skysip, I tryed a lot of apps and this one works with out being powerhungry)

is there a asterisk cli command to get the supported codec of a connected client?

2

website of the makers is down. Perhaps i need to look for a other android app.

3

Capture the INVITE with sip set debug on to see what codec they are offerning.

(However, unless there are strong reasons to the contrary, you should be using chan_pjsip.)

4

I’m a beginner. Will my grandstream hardware work with chan_pjsip?

5

Is this what the softphone is offering?

v=0
o=- 108297813306 1 IN IP4 192.168.5.128
s=Cpc session
c=IN IP4 192.168.5.128
t=0 0
m=audio 51330 RTP/AVP 120 9 0 8 18 101
a=rtpmap:120 opus/48000/2
a=fmtp:120 useinbandfec=1; usedtx=1; maxaveragebitrate=64000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv
m=video 65256 RTP/AVP 125 126 120
a=rtpmap:125 H264/90000
a=fmtp:125 profile-level-id=42801f;packetization-mode=0
a=rtpmap:126 H264/90000
a=fmtp:126 profile-level-id=42801f;packetization-mode=1
a=rtpmap:120 VP8/90000
a=rtcp-fb:* nack
a=rtcp-fb:* nack pli
a=sendrecv
6

it works. I was testing it with only allowing a video codec. a voice codec is also required.

7

It is generally only some SIP providers that use SIP in strange ways that have problems.

8

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