diff --git a/html5/verto/demo/js/verto-min.js b/html5/verto/demo/js/verto-min.js
index 2f7d8b08d2..64291c2fb1 100644
--- a/html5/verto/demo/js/verto-min.js
+++ b/html5/verto/demo/js/verto-min.js
@@ -6,8 +6,8 @@ function getCodecPayloadType(sdpLine){var pattern=new RegExp('a=rtpmap:(\\d+) \\
 function setDefaultCodec(mLine,payload){var elements=mLine.split(' ');var newLine=[];var index=0;for(var i=0;i<elements.length;i++){if(index===3){newLine[index++]=payload;}
 if(elements[i]!==payload)newLine[index++]=elements[i];}
 return newLine.join(' ');}
-$.FSRTC=function(options){this.options=$.extend({useVideo:null,useStereo:false,userData:null,iceServers:false,videoParams:{},audioParams:{},callbacks:{onICEComplete:function(){},onICE:function(){},onOfferSDP:function(){}}},options);this.mediaData={SDP:null,profile:{},candidateList:[]};this.constraints={optional:[{'DtlsSrtpKeyAgreement':'true'}],mandatory:{OfferToReceiveAudio:true,OfferToReceiveVideo:this.options.useVideo?true:false,}};if(self.options.useVideo){self.options.useVideo.style.display='none';}
-setCompat();checkCompat();};$.FSRTC.prototype.useVideo=function(obj){var self=this;if(obj){self.options.useVideo=obj;self.constraints.mandatory.OfferToReceiveVideo=true;}else{self.options.useVideo=null;self.constraints.mandatory.OfferToReceiveVideo=false;}
+$.FSRTC=function(options){this.options=$.extend({useVideo:null,useStereo:false,userData:null,iceServers:false,videoParams:{},audioParams:{},callbacks:{onICEComplete:function(){},onICE:function(){},onOfferSDP:function(){}}},options);this.mediaData={SDP:null,profile:{},candidateList:[]};this.constraints={offerToReceiveAudio:true,offerToReceiveVideo:this.options.useVideo?true:false,};if(self.options.useVideo){self.options.useVideo.style.display='none';}
+setCompat();checkCompat();};$.FSRTC.prototype.useVideo=function(obj){var self=this;if(obj){self.options.useVideo=obj;self.constraints.offerToReceiveVideo=true;}else{self.options.useVideo=null;self.constraints.offerToReceiveVideo=false;}
 if(self.options.useVideo){self.options.useVideo.style.display='none';}};$.FSRTC.prototype.useStereo=function(on){var self=this;self.options.useStereo=on;};$.FSRTC.prototype.stereoHack=function(sdp){var self=this;if(!self.options.useStereo){return sdp;}
 var sdpLines=sdp.split('\r\n');var opusIndex=findLine(sdpLines,'a=rtpmap','opus/48000'),opusPayload;if(opusIndex){opusPayload=getCodecPayloadType(sdpLines[opusIndex]);}
 var fmtpLineIndex=findLine(sdpLines,'a=fmtp:'+opusPayload.toString());if(fmtpLineIndex===null)return sdp;sdpLines[fmtpLineIndex]=sdpLines[fmtpLineIndex].concat('; stereo=1');sdp=sdpLines.join('\r\n');return sdp;};function setCompat(){$.FSRTC.moz=!!navigator.mozGetUserMedia;if(!navigator.getUserMedia){navigator.getUserMedia=navigator.mozGetUserMedia||navigator.webkitGetUserMedia||navigator.msGetUserMedia;}}
@@ -30,15 +30,15 @@ $.FSRTC.prototype.answer=function(sdp,onSuccess,onError){this.peer.addAnswerSDP(
 if(self.localStream){self.localStream.stop();self.localStream=null;}
 if(self.peer){console.log("stopping peer");self.peer.stop();}};$.FSRTC.prototype.createAnswer=function(sdp){var self=this;self.type="answer";self.remoteSDP=sdp;console.debug("inbound sdp: ",sdp);function onSuccess(stream){self.localStream=stream;self.peer=RTCPeerConnection({type:self.type,attachStream:self.localStream,onICE:function(candidate){return onICE(self,candidate);},onICEComplete:function(){return onICEComplete(self);},onRemoteStream:function(stream){return onRemoteStream(self,stream);},onICESDP:function(sdp){return onICESDP(self,sdp);},onChannelError:function(e){return onChannelError(self,e);},constraints:self.constraints,iceServers:self.options.iceServers,offerSDP:{type:"offer",sdp:self.remoteSDP}});onStreamSuccess(self);}
 function onError(){onStreamError(self);}
-getUserMedia({constraints:{audio:{mandatory:this.options.audioParams,optional:[]},video:this.options.useVideo?{mandatory:this.options.videoParams,optional:[]}:null},video:this.options.useVideo?true:false,onsuccess:onSuccess,onerror:onError});};$.FSRTC.prototype.call=function(profile){checkCompat();var self=this;self.type="offer";function onSuccess(stream){self.localStream=stream;self.peer=RTCPeerConnection({type:self.type,attachStream:self.localStream,onICE:function(candidate){return onICE(self,candidate);},onICEComplete:function(){return onICEComplete(self);},onRemoteStream:function(stream){return onRemoteStream(self,stream);},onOfferSDP:function(sdp){return onOfferSDP(self,sdp);},onICESDP:function(sdp){return onICESDP(self,sdp);},onChannelError:function(e){return onChannelError(self,e);},constraints:self.constraints,iceServers:self.options.iceServers,});onStreamSuccess(self);}
+console.log("Mandatory audio constraints",this.options.audioParams);console.log("Mandatory video constraints",this.options.videoParams);getUserMedia({constraints:{audio:{mandatory:this.options.audioParams,optional:[]},video:this.options.useVideo?{mandatory:this.options.videoParams,optional:[]}:null},video:this.options.useVideo?true:false,onsuccess:onSuccess,onerror:onError});};$.FSRTC.prototype.call=function(profile){checkCompat();var self=this;self.type="offer";function onSuccess(stream){self.localStream=stream;self.peer=RTCPeerConnection({type:self.type,attachStream:self.localStream,onICE:function(candidate){return onICE(self,candidate);},onICEComplete:function(){return onICEComplete(self);},onRemoteStream:function(stream){return onRemoteStream(self,stream);},onOfferSDP:function(sdp){return onOfferSDP(self,sdp);},onICESDP:function(sdp){return onICESDP(self,sdp);},onChannelError:function(e){return onChannelError(self,e);},constraints:self.constraints,iceServers:self.options.iceServers,});onStreamSuccess(self);}
 function onError(){onStreamError(self);}
-getUserMedia({constraints:{audio:{mandatory:this.options.audioParams,optional:[]},video:this.options.useVideo?{mandatory:this.options.videoParams,optional:[]}:null},video:this.options.useVideo?true:false,onsuccess:onSuccess,onerror:onError});};window.moz=!!navigator.mozGetUserMedia;function RTCPeerConnection(options){var w=window,PeerConnection=w.mozRTCPeerConnection||w.webkitRTCPeerConnection,SessionDescription=w.mozRTCSessionDescription||w.RTCSessionDescription,IceCandidate=w.mozRTCIceCandidate||w.RTCIceCandidate;var STUN={url:!moz?'stun:stun.l.google.com:19302':'stun:23.21.150.121'};var TURN={url:'turn:homeo@turn.bistri.com:80',credential:'homeo'};var iceServers=null;if(options.iceServers){var tmp=options.iceServers;if(typeof(tmp)==="boolean"){tmp=null;}
+console.log("Mandatory audio constraints",this.options.audioParams);console.log("Mandatory video constraints",this.options.videoParams);getUserMedia({constraints:{audio:{mandatory:this.options.audioParams,optional:[]},video:this.options.useVideo?{mandatory:this.options.videoParams,optional:[]}:null},video:this.options.useVideo?true:false,onsuccess:onSuccess,onerror:onError});};window.moz=!!navigator.mozGetUserMedia;function RTCPeerConnection(options){var w=window,PeerConnection=w.mozRTCPeerConnection||w.webkitRTCPeerConnection,SessionDescription=w.mozRTCSessionDescription||w.RTCSessionDescription,IceCandidate=w.mozRTCIceCandidate||w.RTCIceCandidate;var STUN={url:!moz?'stun:stun.l.google.com:19302':'stun:23.21.150.121'};var TURN={url:'turn:homeo@turn.bistri.com:80',credential:'homeo'};var iceServers=null;if(options.iceServers){var tmp=options.iceServers;if(typeof(tmp)==="boolean"){tmp=null;}
 if(!(tmp&&typeof(tmp)=="object"&&tmp.constructor===Array)){console.warn("iceServers must be an array, reverting to default ice servers");tmp=null;}
 iceServers={iceServers:tmp||[STUN]};if(!moz&&!tmp){if(parseInt(navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./)[2])>=28)TURN={url:'turn:turn.bistri.com:80',credential:'homeo',username:'homeo'};iceServers.iceServers=[STUN];}}
 var optional={optional:[]};if(!moz){optional.optional=[{DtlsSrtpKeyAgreement:true},{RtpDataChannels:options.onChannelMessage?true:false}];}
 var peer=new PeerConnection(iceServers,optional);openOffererChannel();var x=0;peer.onicecandidate=function(event){if(event.candidate){options.onICE(event.candidate);}else{if(options.onICEComplete){options.onICEComplete();}
-if(options.type=="offer"){if((!moz||peer.localDescription.sdp.match(/a=candidate/))&&!x&&options.onICESDP){options.onICESDP(peer.localDescription);}}else{if(!x&&options.onICESDP){options.onICESDP(peer.localDescription);}}}};if(options.attachStream)peer.addStream(options.attachStream);if(options.attachStreams&&options.attachStream.length){var streams=options.attachStreams;for(var i=0;i<streams.length;i++){peer.addStream(streams[i]);}}
-peer.onaddstream=function(event){var remoteMediaStream=event.stream;remoteMediaStream.onended=function(){if(options.onRemoteStreamEnded)options.onRemoteStreamEnded(remoteMediaStream);};if(options.onRemoteStream)options.onRemoteStream(remoteMediaStream);};var constraints=options.constraints||{optional:[],mandatory:{OfferToReceiveAudio:true,OfferToReceiveVideo:true},offerToReceiveAudio:true,offerToReceiveVideo:true};function createOffer(){if(!options.onOfferSDP)return;peer.createOffer(function(sessionDescription){sessionDescription.sdp=serializeSdp(sessionDescription.sdp);peer.setLocalDescription(sessionDescription);options.onOfferSDP(sessionDescription);if(moz&&options.onICESDP&&sessionDescription.match(/a=candidate/)){options.onICESDP(sessionDescription);}},onSdpError,constraints);}
+if(options.type=="offer"){if((!moz||(!options.sentICESDP&&peer.localDescription.sdp.match(/a=candidate/))&&!x&&options.onICESDP)){options.onICESDP(peer.localDescription);}}else{if(!x&&options.onICESDP){options.onICESDP(peer.localDescription);}}}};if(options.attachStream)peer.addStream(options.attachStream);if(options.attachStreams&&options.attachStream.length){var streams=options.attachStreams;for(var i=0;i<streams.length;i++){peer.addStream(streams[i]);}}
+peer.onaddstream=function(event){var remoteMediaStream=event.stream;remoteMediaStream.onended=function(){if(options.onRemoteStreamEnded)options.onRemoteStreamEnded(remoteMediaStream);};if(options.onRemoteStream)options.onRemoteStream(remoteMediaStream);};var constraints=options.constraints||{offerToReceiveAudio:true,offerToReceiveVideo:true};function createOffer(){if(!options.onOfferSDP)return;peer.createOffer(function(sessionDescription){sessionDescription.sdp=serializeSdp(sessionDescription.sdp);peer.setLocalDescription(sessionDescription);options.onOfferSDP(sessionDescription);if(moz&&options.onICESDP&&sessionDescription.sdp.match(/a=candidate/)){options.onICESDP(sessionDescription);options.sentICESDP=1;}},onSdpError,constraints);}
 function createAnswer(){if(options.type!="answer")return;peer.setRemoteDescription(new SessionDescription(options.offerSDP),onSdpSuccess,onSdpError);peer.createAnswer(function(sessionDescription){sessionDescription.sdp=serializeSdp(sessionDescription.sdp);peer.setLocalDescription(sessionDescription);if(options.onAnswerSDP){options.onAnswerSDP(sessionDescription);}},onSdpError,constraints);}
 if((options.onChannelMessage&&!moz)||!options.onChannelMessage){createOffer();createAnswer();}
 function setBandwidth(sdp){sdp=sdp.replace(/b=AS([^\r\n]+\r\n)/g,'');sdp=sdp.replace(/a=mid:data\r\n/g,'a=mid:data\r\nb=AS:1638400\r\n');return sdp;}
@@ -92,7 +92,7 @@ $.ajax({url:self.jsonrpcclient.options.ajaxUrl,data:$.toJSON(batch_request),data
 if(typeof all_done_cb==='function')all_done_cb(result);};})(jQuery);(function($){var generateGUID=(typeof(window.crypto)!=='undefined'&&typeof(window.crypto.getRandomValues)!=='undefined')?function(){var buf=new Uint16Array(8);window.crypto.getRandomValues(buf);var S4=function(num){var ret=num.toString(16);while(ret.length<4){ret="0"+ret;}
 return ret;};return(S4(buf[0])+S4(buf[1])+"-"+S4(buf[2])+"-"+S4(buf[3])+"-"+S4(buf[4])+"-"+S4(buf[5])+S4(buf[6])+S4(buf[7]));}:function(){return'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g,function(c){var r=Math.random()*16|0,v=c=='x'?r:(r&0x3|0x8);return v.toString(16);});};$.verto=function(options,callbacks){var verto=this;$.verto.saved.push(verto);verto.options=$.extend({login:null,passwd:null,socketUrl:null,tag:null,videoParams:{},audioParams:{},iceServers:false,ringSleep:6000},options);verto.sessid=$.cookie('verto_session_uuid')||generateGUID();$.cookie('verto_session_uuid',verto.sessid,{expires:1});verto.dialogs={};verto.callbacks=callbacks||{};verto.eventSUBS={};verto.rpcClient=new $.JsonRpcClient({login:verto.options.login,passwd:verto.options.passwd,socketUrl:verto.options.socketUrl,sessid:verto.sessid,onmessage:function(e){return verto.handleMessage(e.eventData);},onWSConnect:function(o){o.call('login',{});},onWSLogin:function(success){if(verto.callbacks.onWSLogin){verto.callbacks.onWSLogin(verto,success);}},onWSClose:function(success){if(verto.callbacks.onWSClose){verto.callbacks.onWSClose(verto,success);}
 verto.purge();}});if(verto.options.ringFile&&verto.options.tag){verto.ringer=$("#"+verto.options.tag);}
-verto.rpcClient.call('login',{});};$.verto.prototype.iceServers=function(on){var verto=this;verto.options.iceServers=on;};$.verto.prototype.loginData=function(params){verto.options.login=params.login;verto.options.passwd=params.passwd;verto.rpcClient.loginData(params);};$.verto.prototype.logout=function(msg){var verto=this;verto.rpcClient.closeSocket();if(verto.callbacks.onWSClose){verto.callbacks.onWSClose(verto,false);}
+verto.rpcClient.call('login',{});};$.verto.prototype.videoParams=function(on){var verto=this;verto.options.videoParams=on;};$.verto.prototype.iceServers=function(on){var verto=this;verto.options.iceServers=on;};$.verto.prototype.loginData=function(params){verto.options.login=params.login;verto.options.passwd=params.passwd;verto.rpcClient.loginData(params);};$.verto.prototype.logout=function(msg){var verto=this;verto.rpcClient.closeSocket();if(verto.callbacks.onWSClose){verto.callbacks.onWSClose(verto,false);}
 verto.purge();};$.verto.prototype.login=function(msg){var verto=this;verto.logout();verto.rpcClient.call('login',{});};$.verto.prototype.message=function(msg){var verto=this;var err=0;if(!msg.to){console.error("Missing To");err++;}
 if(!msg.body){console.error("Missing Body");err++;}
 if(err){return false;}
diff --git a/html5/verto/js/src/jquery.FSRTC.js b/html5/verto/js/src/jquery.FSRTC.js
index e228ee18e6..a404d006e4 100644
--- a/html5/verto/js/src/jquery.FSRTC.js
+++ b/html5/verto/js/src/jquery.FSRTC.js
@@ -94,13 +94,8 @@
         };
 
         this.constraints = {
-            optional: [{
-                'DtlsSrtpKeyAgreement': 'true'
-            }],
-            mandatory: {
-                OfferToReceiveAudio: true,
-                OfferToReceiveVideo: this.options.useVideo ? true : false,
-            }
+            offerToReceiveAudio: true,
+            offerToReceiveVideo: this.options.useVideo ? true : false,
         };
 
         if (self.options.useVideo) {
@@ -116,10 +111,10 @@
 
         if (obj) {
             self.options.useVideo = obj;
-            self.constraints.mandatory.OfferToReceiveVideo = true;
+            self.constraints.offerToReceiveVideo = true;
         } else {
             self.options.useVideo = null;
-            self.constraints.mandatory.OfferToReceiveVideo = false;
+            self.constraints.offerToReceiveVideo = false;
         }
 
         if (self.options.useVideo) {
@@ -321,6 +316,9 @@
             onStreamError(self);
         }
 
+	console.log("Mandatory audio constraints", this.options.audioParams);
+	console.log("Mandatory video constraints", this.options.videoParams);
+
         getUserMedia({
             constraints: {
                 audio: {
@@ -381,6 +379,9 @@
             onStreamError(self);
         }
 
+	console.log("Mandatory audio constraints", this.options.audioParams);
+	console.log("Mandatory video constraints", this.options.videoParams);
+
         getUserMedia({
             constraints: {
                 audio: {
@@ -488,7 +489,7 @@
 		       Booooooooo! This trickle thing is a waste of time...... We'll all have to re-code our engines 
 		       to handle partial setups to maybe save 100m
 		     */
-                    if ((!moz || peer.localDescription.sdp.match(/a=candidate/)) && !x && options.onICESDP) {
+                    if ((!moz || (!options.sentICESDP && peer.localDescription.sdp.match(/a=candidate/)) && !x && options.onICESDP)) {
                         options.onICESDP(peer.localDescription);
                         //x = 1;
                         /*
@@ -549,12 +550,6 @@
         };
 
         var constraints = options.constraints || {
-            optional: [],
-            mandatory: {
-                OfferToReceiveAudio: true,
-                OfferToReceiveVideo: true
-            },
-	    /* spec is changed support both ways at once */
 	    offerToReceiveAudio: true,
 	    offerToReceiveVideo: true   
         };
@@ -568,8 +563,9 @@
                 peer.setLocalDescription(sessionDescription);
                 options.onOfferSDP(sessionDescription);
 		/* old mozilla behaviour the SDP was already great right away */
-                if (moz && options.onICESDP && sessionDescription.match(/a=candidate/)) {
+                if (moz && options.onICESDP && sessionDescription.sdp.match(/a=candidate/)) {
                     options.onICESDP(sessionDescription);
+		    options.sentICESDP = 1;
                 }
             },
             onSdpError, constraints);
diff --git a/html5/verto/js/src/jquery.verto.js b/html5/verto/js/src/jquery.verto.js
index 57fda41da1..53deb8feef 100644
--- a/html5/verto/js/src/jquery.verto.js
+++ b/html5/verto/js/src/jquery.verto.js
@@ -118,6 +118,11 @@
 
     };
 
+    $.verto.prototype.videoParams = function(on) {
+        var verto = this;
+        verto.options.videoParams = on;
+    };
+
     $.verto.prototype.iceServers = function(on) {
         var verto = this;
         verto.options.iceServers = on;