[asterisk-bugs] [JIRA] (ASTERISK-28417) SDP negotiation issue

[Benjamin Keith Ford (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-28417?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Benjamin Keith Ford updated ASTERISK-28417:
-------------------------------------------

    Assignee: Alan  (was: Unassigned)
      Status: Waiting for Feedback  (was: Triage)

We'll have to try and narrow down the problem. Can you test this with 2 of the same kind of phone? Either 2 soft phones or 2 Grandstreams, and check the SDP for those scenarios? Also, if possible, it may be worth trying in 16 as a lot of video work was done in that version. Although 16 is dealing more with multiple streams, if it does help the situation, we would have a better idea of where to look for the problem.

> SDP negotiation issue
> ---------------------
>
>                 Key: ASTERISK-28417
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28417
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Core/General, Resources/res_pjsip_sdp_rtp
>    Affects Versions: 13.26.0
>         Environment: Linux
>            Reporter: Alan
>            Assignee: Alan
>            Severity: Minor
>              Labels: pjsip
>
> I compiled Asterisk 13.26.0 with external pjsip 2.6.
> Asterisk is in the same network as 2 phones:
> extension 11: software phone based on pjproject 2.8
> extension 02: hardware phone Grandstream GXV3240
> When 11 calls 02, audio works well but the video looks terrible.
> extract of SDP from 11 to Asterisk:
> m=video 4014 RTP/AVP 97 96
> c=IN IP4 10.6.0.254
> b=TIAS:256000
> a=rtcp:4015 IN IP4 10.6.0.254
> a=sendrecv
> a=rtpmap:97 H264/90000
> a=fmtp:97 profile-level-id=42e01e; packetization-mode=1
> a=rtpmap:96 H263-1998/90000
> a=fmtp:96 CIF=1;QCIF=1
> a=ssrc:1987299971 cname:719547ff01003a20
> extract of SDP from Asterisk to 02:
> m=video 4014 RTP/AVP 97 96
> c=IN IP4 10.6.0.254
> b=TIAS:256000
> a=rtcp:4015 IN IP4 10.6.0.254
> a=sendrecv
> a=rtpmap:97 H264/90000
> a=fmtp:97 profile-level-id=42e01e; packetization-mode=1
> a=rtpmap:96 H263-1998/90000
> a=fmtp:96 CIF=1;QCIF=1
> a=ssrc:1987299971 cname:719547ff01003a20
> extract of SDP from 02 to Asterisk:
> m=video 5006 RTP/AVP 99
> a=sendrecv
> a=rtcp:5007 IN IP4 10.6.0.244
> a=rtpmap:99 H264/90000
> a=fmtp:99 profile-level-id=42E014; packetization-mode=1
> a=content:main
> a=label:11
> extract of SDP from Asterisk to 11:
> m=video 19562 RTP/AVP 97
> a=rtpmap:97 H264/90000
> a=fmtp:97 packetization-mode=1;profile-level-id=42E01E
> a=sendrecv
> At this point the profile-level-id changed from 2.0 to 3.0.
> Could this be causing the video issue?



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