https://freeswitch.org/confluence/display/FREESWITCH/Codec+Negotiation Look at late negotiation and inherit_codec params. On Wed, Jan 13, 2016 at 4:21 PM, Frédéric LUART <frederic.luart@gmail.com> wrote:
Hello,
I am trying to establish a video call from a linPhone to a Polycom device. Polycom is configured as an external gateway device on my Freeswitch.
I have tried several tests and I have added the H264 configuration in file modules.conf.xml : <load module="mod_h26x"/>
and also in vars.xml: <X-PRE-PROCESS cmd="set" data="global_codec_prefs=OPUS,G722,PCMU,PCMA,H264,VP8"/> <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=OPUS,G722,PCMU,PCMA,H264,VP8"/>
I am now able to establish the call from linphone to Polycom but only audio is established. I have looked at SIP trace with wireshark and the 200OK that is send back from Freeswitch to LinPhone has only VP8 in the SDP.
Linphone -----> Invite (VP8, H264) -----> Freeswitch -----> Invite (VP8, H264) -----> Polycom <----- 200OK (VP8) <----- <----- 200OK (H264) <----
I have tried different configuration without success. Do you have an idea of what may be missing to have H264 in the 200OK instead of VP8 ? Or is there another solution ?
Thanks in advance for your help
Fred
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