[OpenSIPS-Users] SIPREC video calls

[Walter Schober]

FYI: Workaround: Use RTPENGINE Templates

                # rtpengine.conf:
                # [templates]
                # SIPREC = allow-transcoding asymmetric sdp-media-remove=[video text image]
                $siprec(media) = "template=SIPREC";

Does what it should:

2026-02-19T09:55:40.009194+01:00 p01t-1 rtpengine[137018]: DEBUG: [srs-i-k8803vvm65ecjrj1erh8]: [control] Dump for 'subscribe request' from 10.55.252.196:45082: { "call-id": "srs-i-k8803vvm65ecjrj1erh8", "flags": [ "all", "siprec" ], "template": "SIPREC", "received-from": [ "IP4", "0.0.0.0" ], "from-tag": "1", "command": "subscribe request" }

But now it’s rtpengine issue: the video lines are not removed, still.

br
Walter

Am 18.02.2026 um 20:48 schrieb Walter Schober <walter.schober at neotel.at>:

Hi Sal!

Thank you for the references. [2] is exactly my issue. Following the suggestion this results in

$siprec(media) = "allow-transcoding asymmetric rtpp-flags=sdp-media-remove=[video]";

rtpengine.log:

2026-02-18T20:29:13.287789+01:00 p01t-1 rtpengine[720]: DEBUG: [srs-i-jib4vodead5nlg8cbg7t]: [control] Dump for 'subscribe request' from 10.55.252.196:45930: { "call-id":
"srs-i-jib4vodead5nlg8cbg7t", "flags": [ "all", "siprec", "allow-transcoding", "asymmetric" ], "rtpp-flags": "sdp-media-remove=[video]", "received-from": [ "IP4", "0.0.0.0
" ], "from-tag": "1", "command": "subscribe request" }

which still does not filter out the video. -> no error in rtpengine.log for an unknown parameter though.

Also tried:

sdp-media-remove-video
sdp-media-remove--video
sdp-media-remove=[video] -> "sdp-media-remove": "[video]"
sdp-media-remove=[video,text]
sdp-media-remove=[\“video\“] -> "sdp-media-remove": "["video"]"

all attr=value go into attr:strvalue into NG, all others go into flags list.

But maybe simply the „subscribe request“ does not support sdp-media-remove?

br
Walter

Am 18.02.2026 um 19:03 schrieb Salvinder Parhar <salvinder.parhar09 at gmail.com>:

Hi Walter,

I think there's a PR[1] from NormB waiting to be reviewed/merged that introduces sending flags as list to rtpengine.

In the meantime, as advised by Richard in the rtpengine google group [2], you can use the below syntax to send it:
`rtpengine_offer("rtpp-flags=sdp-media-remove=[video]")`

[1] https://github.com/OpenSIPS/opensips/pull/3818
[2] https://groups.google.com/g/rtpengine/c/yXDeKzLYmVw/m/k1yFRddFAQAJ

Thanks,
Sal

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