Hi, This is a way to force recvonly mode, by setting up a handler for on_call_sdp_created: // set up handler app_config.cfg.cb.on_call_sdp_created = &on_call_sdp_created; static void on_call_sdp_created(pjsua_call_id call_id, pjmedia_sdp_session *sdp, pj_pool_t *pool, const pjmedia_sdp_session *rem_sdp) { pj_status_t status; pjmedia_sdp_attr *attr; unsigned count; unsigned i; PJ_UNUSED_ARG(call_id); // only add recvonly when first offering if (rem_sdp == NULL) { // remove sendrecv from media attributes for (i = 0; i < sdp->media_count; i++) { pjmedia_sdp_media_remove_all_attr(sdp->media[i], "sendrecv"); attr = pjmedia_sdp_attr_create(pool, "recvonly", NULL); status = pjmedia_sdp_media_add_attr(sdp->media[i], attr); if (status != PJ_SUCCESS) { PJ_LOG(3, (THIS_FILE, "error %d adding attribute to SDP media", status)); } } } } Regards, Bill On 11/10/2015 10:23 PM, zhuyongwen at made-in-china.com wrote: > Hi all, > i video call , when one ua-a doens't got any camer , the other > side(ua-b) will show a picutre like below : > > > so i try to make the ua-b as one video recvonly , > > in my ua-b my code like this : > on_pjsip_media_state(pjsua_call_id cid ) { > ******* > > if(type==VIDEO) > { > pjsua_call_vid_strm_op_param param; > pjsua_call_vid_strm_param_default(¶m); > param.dir = PJMEDIA_DIR_DECODEING; > pjsua_call_set_vid_strm(cid,PJSUA_CALL_VID_STREM_CHANGE_DIR, ¶m); > } > ********** > } > > but it doen't work , the sdp will still sendrecv; > > > v=0 > o=- 3656229426 3656229428 IN IP4 221.226.184.166 > s=pjmedia > b=AS:621 > t=0 0 > a=X-nat:0 > m=audio 54641 RTP/AVP 98 96 > c=IN IP4 221.226.184.166 > b=TIAS:64000 > a=sendrecv > a=rtpmap:98 speex/16000 > a=rtpmap:96 telephone-event/8000 > a=fmtp:96 0-16 > a=ice-ufrag:6e5d1ad4 > a=ice-pwd:63cb6bfc > a=rtcp:61445 IN IP4 192.168.17.153 > a=candidate:Rdde2b8a6 1 UDP 16777215 221.226.184.166 54641 typ relay raddr 192.168.28.106 rport 10383 > a=candidate:Rc0a81199 2 UDP 16777214 192.168.17.153 61445 typ relay raddr 192.168.28.106 rport 10384 > m=video 63261 RTP/AVP 97 > c=IN IP4 221.226.184.166 > b=TIAS:512000 > a=sendrecv > a=rtpmap:97 H264/90000 > a=fmtp:97 profile-level-id=42e01e; packetization-mode=1 > a=ice-ufrag:2213260d > a=ice-pwd:6b89030a > a=rtcp:53440 IN IP4 221.226.184.166 > a=candidate:Rdde2b8a6 1 UDP 16777215 221.226.184.166 63261 typ relay raddr 192.168.28.106 rport 10385 > a=candidate:Rdde2b8a6 2 UDP 16777214 221.226.184.166 53440 typ relay raddr 192.168.28.106 rport 10386 > > > > so how can i make ua-b just recv the vid stream? thx a lot.. > > > ------------------------------------------------------------------------ > Best regards. > > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20151111/5d55c006/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/jpeg Size: 7820 bytes Desc: not available URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20151111/5d55c006/attachment.jpe>