Hi, There's no video when bridged calls through fifo, I found no video support in the following code. I made a work around by setting sip_use_codec_name="PCMU,H264" question is will this causing problem? what's the purpose of the following code? how can I add video support ? Thanks. if ((codec = switch_event_get_header(pop, "variable_sip_use_codec_name"))) { const char *rate = switch_event_get_header(pop, "variable_sip_use_codec_rate"); const char *ptime = switch_event_get_header(pop, "variable_sip_use_codec_ptime"); char nstr[256] = ""; if (strcasecmp(codec, "PCMU") && strcasecmp(codec, "PCMA")) { switch_snprintf(nstr, sizeof(nstr), "%s@%si@%sh,PCMU@%si,PCMA@%si", codec, ptime, rate, ptime, ptime); } else { switch_snprintf(nstr, sizeof(nstr), "%s@%si@%sh", codec, ptime, rate); } switch_event_add_header_string(ovars, SWITCH_STACK_BOTTOM, "absolute_codec_string", nstr); } -- About: http://about.me/dujinfang Blog: http://www.dujinfang.com Proj: http://www.freeswitch.org.cn Sent with Sparrow (http://www.sparrowmailapp.com)