diff --git a/html5/verto/js/src/jquery.FSRTC.js b/html5/verto/js/src/jquery.FSRTC.js
index 814fdfa3a8..b2ff3a9ca4 100644
--- a/html5/verto/js/src/jquery.FSRTC.js
+++ b/html5/verto/js/src/jquery.FSRTC.js
@@ -102,18 +102,26 @@
 
 	if (moz) {
             this.constraints = {
-		offerToReceiveAudio: true,
-		offerToReceiveVideo: this.options.useVideo ? true : false,
+		offerToReceiveAudio: true
             };
+	    if (this.options.useVideo) {
+		this.constraints.offerToReceiveVideo = true;
+	    }
+
 	} else {
             this.constraints = {
 		optional: [{
 		    'DtlsSrtpKeyAgreement': 'true'
 		}],mandatory: {
-		    OfferToReceiveAudio: true,
-		    OfferToReceiveVideo: this.options.useVideo ? true : false,
+		    OfferToReceiveAudio: true
 		}
-            };
+	    };
+
+	    if (this.options.useVideo) {
+		console.error(this.options.useVideo);
+		this.constraints.manditory.OfferToReceiveVideo = true;
+	    }
+            
 	}
 
         if (self.options.useVideo) {
@@ -141,9 +149,9 @@
             self.options.useVideo = null;
 	    self.options.localVideo = null;
             if (moz) {
-		self.constraints.offerToReceiveVideo = false;
+		delete self.constraints.offerToReceiveVideo;
 	    } else {
-		self.constraints.mandatory.OfferToReceiveVideo = false;
+		delete self.constraints.mandatory.OfferToReceiveVideo;
 	    }
         }
 
@@ -398,6 +406,7 @@
 
 	console.log("Audio constraints", mediaParams.audio);
 	console.log("Video constraints", mediaParams.video);
+	console.log("Device constraints", self.constraints);
 
 	if (self.options.useVideo && self.options.localVideo) {
             getUserMedia({
@@ -526,9 +535,9 @@
 	    
 	    if (screen) {
 		if (moz) {
-		    self.constraints.OfferToReceiveVideo = false;
+		    delete self.constraints.OfferToReceiveVideo;
 		} else {
-		    self.constraints.mandatory.OfferToReceiveVideo = false;
+		    delete self.constraints.mandatory.OfferToReceiveVideo;
 		}
 	    }
 	    
@@ -568,12 +577,12 @@
 
 	console.log("Audio constraints", mediaParams.audio);
 	console.log("Video constraints", mediaParams.video);
-
+	console.log("Device constraints", self.constraints);
 
         getUserMedia({
             constraints: {
-                audio: mediaParams.audio,
-                video: mediaParams.video
+                audio: mediaParams.audio
+                //video: mediaParams.video
             },
             video: mediaParams.useVideo,
             onsuccess: onSuccess,
diff --git a/html5/verto/video_demo/js/verto-min.js b/html5/verto/video_demo/js/verto-min.js
index d88e62b9ce..3577858fb9 100644
--- a/html5/verto/video_demo/js/verto-min.js
+++ b/html5/verto/video_demo/js/verto-min.js
@@ -6,9 +6,9 @@ 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,localVideo:null,screenShare:false,useCamera:"any",iceServers:false,videoParams:{},audioParams:{},callbacks:{onICEComplete:function(){},onICE:function(){},onOfferSDP:function(){}},},options);this.enabled=true;this.mediaData={SDP:null,profile:{},candidateList:[]};if(moz){this.constraints={offerToReceiveAudio:true,offerToReceiveVideo:this.options.useVideo?true:false,};}else{this.constraints={optional:[{'DtlsSrtpKeyAgreement':'true'}],mandatory:{OfferToReceiveAudio:true,OfferToReceiveVideo:this.options.useVideo?true:false,}};}
+$.FSRTC=function(options){this.options=$.extend({useVideo:null,useStereo:false,userData:null,localVideo:null,screenShare:false,useCamera:"any",iceServers:false,videoParams:{},audioParams:{},callbacks:{onICEComplete:function(){},onICE:function(){},onOfferSDP:function(){}},},options);this.enabled=true;this.mediaData={SDP:null,profile:{},candidateList:[]};if(moz){this.constraints={offerToReceiveAudio:true};if(this.options.useVideo){this.constraints.offerToReceiveVideo=true;}}else{this.constraints={optional:[{'DtlsSrtpKeyAgreement':'true'}],mandatory:{OfferToReceiveAudio:true}};if(this.options.useVideo){console.error(this.options.useVideo);this.constraints.manditory.OfferToReceiveVideo=true;}}
 if(self.options.useVideo){self.options.useVideo.style.display='none';}
-setCompat();checkCompat();};$.FSRTC.validRes=[];$.FSRTC.prototype.useVideo=function(obj,local){var self=this;if(obj){self.options.useVideo=obj;self.options.localVideo=local;if(moz){self.constraints.offerToReceiveVideo=true;}else{self.constraints.mandatory.OfferToReceiveVideo=true;}}else{self.options.useVideo=null;self.options.localVideo=null;if(moz){self.constraints.offerToReceiveVideo=false;}else{self.constraints.mandatory.OfferToReceiveVideo=false;}}
+setCompat();checkCompat();};$.FSRTC.validRes=[];$.FSRTC.prototype.useVideo=function(obj,local){var self=this;if(obj){self.options.useVideo=obj;self.options.localVideo=local;if(moz){self.constraints.offerToReceiveVideo=true;}else{self.constraints.mandatory.OfferToReceiveVideo=true;}}else{self.options.useVideo=null;self.options.localVideo=null;if(moz){delete self.constraints.offerToReceiveVideo;}else{delete self.constraints.mandatory.OfferToReceiveVideo;}}
 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;}}
@@ -37,7 +37,7 @@ self.enabled=audioTracks[i].enabled;}
 return!self.enabled;}
 $.FSRTC.prototype.createAnswer=function(params){var self=this;self.type="answer";self.remoteSDP=params.sdp;console.debug("inbound sdp: ",params.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(e){onStreamError(self,e);}
-var mediaParams=getMediaParams(self);console.log("Audio constraints",mediaParams.audio);console.log("Video constraints",mediaParams.video);if(self.options.useVideo&&self.options.localVideo){getUserMedia({constraints:{audio:false,video:{mandatory:self.options.videoParams,optional:[]},},localVideo:self.options.localVideo,onsuccess:function(e){self.options.localVideoStream=e;console.log("local video ready");},onerror:function(e){console.error("local video error!");}});}
+var mediaParams=getMediaParams(self);console.log("Audio constraints",mediaParams.audio);console.log("Video constraints",mediaParams.video);console.log("Device constraints",self.constraints);if(self.options.useVideo&&self.options.localVideo){getUserMedia({constraints:{audio:false,video:{mandatory:self.options.videoParams,optional:[]},},localVideo:self.options.localVideo,onsuccess:function(e){self.options.localVideoStream=e;console.log("local video ready");},onerror:function(e){console.error("local video error!");}});}
 getUserMedia({constraints:{audio:mediaParams.audio,video:mediaParams.video},video:mediaParams.useVideo,onsuccess:onSuccess,onerror:onError});};function getMediaParams(obj){var audio;if(obj.options.videoParams&&obj.options.screenShare){console.error("SCREEN SHARE");audio=false;}else{audio={mandatory:obj.options.audioParams,optional:[]};if(obj.options.useMic!=="any"){audio.optional=[{sourceId:obj.options.useMic}]}}
 if(obj.options.useVideo&&obj.options.localVideo){getUserMedia({constraints:{audio:false,video:{mandatory:obj.options.videoParams,optional:[]},},localVideo:obj.options.localVideo,onsuccess:function(e){self.options.localVideoStream=e;console.log("local video ready");},onerror:function(e){console.error("local video error!");}});}
 var video={};var bestFrameRate=obj.options.videoParams.vertoBestFrameRate;delete obj.options.videoParams.vertoBestFrameRate;if(window.moz){video=obj.options.videoParams;if(!video.width)video.width=video.minWidth;if(!video.height)video.height=video.minHeight;if(!video.frameRate)video.frameRate=video.minFrameRate;}else{video={mandatory:obj.options.videoParams,optional:[]}}
@@ -46,10 +46,10 @@ if(obj.options.useCamera!=="any"){video.optional.push({sourceId:obj.options.useC
 if(bestFrameRate&&!window.moz){video.optional.push({minFrameRate:bestFrameRate});}}else{video=null;useVideo=null;}
 return{audio:audio,video:video,useVideo:useVideo};}
 $.FSRTC.prototype.call=function(profile){checkCompat();var self=this;var screen=false;self.type="offer";if(self.options.videoParams&&self.options.screenShare){screen=true;}
-function onSuccess(stream){self.localStream=stream;if(screen){if(moz){self.constraints.OfferToReceiveVideo=false;}else{self.constraints.mandatory.OfferToReceiveVideo=false;}}
+function onSuccess(stream){self.localStream=stream;if(screen){if(moz){delete self.constraints.OfferToReceiveVideo;}else{delete self.constraints.mandatory.OfferToReceiveVideo;}}
 self.peer=RTCPeerConnection({type:self.type,attachStream:self.localStream,onICE:function(candidate){return onICE(self,candidate);},onICEComplete:function(){return onICEComplete(self);},onRemoteStream:screen?function(stream){}: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,stream);}
 function onError(e){onStreamError(self,e);}
-var mediaParams=getMediaParams(self);console.log("Audio constraints",mediaParams.audio);console.log("Video constraints",mediaParams.video);getUserMedia({constraints:{audio:mediaParams.audio,video:mediaParams.video},video:mediaParams.useVideo,onsuccess:onSuccess,onerror:onError});};window.moz=!!navigator.mozGetUserMedia;function RTCPeerConnection(options){var gathering=false,done=false;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 iceServers=null;if(options.iceServers){var tmp=options.iceServers;if(typeof(tmp)==="boolean"){tmp=null;}
+var mediaParams=getMediaParams(self);console.log("Audio constraints",mediaParams.audio);console.log("Video constraints",mediaParams.video);console.log("Device constraints",self.constraints);getUserMedia({constraints:{audio:mediaParams.audio},video:mediaParams.useVideo,onsuccess:onSuccess,onerror:onError});};window.moz=!!navigator.mozGetUserMedia;function RTCPeerConnection(options){var gathering=false,done=false;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 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){iceServers.iceServers=[STUN];}}
 var optional={optional:[]};if(!moz){optional.optional=[{DtlsSrtpKeyAgreement:true},{RtpDataChannels:options.onChannelMessage?true:false}];}