Fixes fadeIn/fadeOut large video transitions in Safari. Enables animation on video resize when switching between camera and screen video.

css/videolayout_default.css

 }
 
 #largeVideo,
+#largeVideoWrapper,
 #largeVideoContainer {
     overflow: hidden;
     text-align: center;
 }
 
-#largeVideo
+#largeVideo,
+#largeVideoWrapper
 {
     object-fit: cover;
 }
 #localVideoWrapper>video,
 #localVideoWrapper>object,
 #localVideoWrapper,
+#largeVideoWrapper,
+#largeVideoWrapper>video,
+#largeVideoWrapper>object,
 .videocontainer>video,
 .videocontainer>object {
     position: absolute;

index.html

     <link rel="stylesheet" href="css/font.css?v=7"/>
     <link rel="stylesheet" href="css/toastr.css?v=1">
     <link rel="stylesheet" type="text/css" media="screen" href="css/main.css?v=31"/>
-    <link rel="stylesheet" type="text/css" media="screen" href="css/videolayout_default.css?v=19" id="videolayout_default"/>
+    <link rel="stylesheet" type="text/css" media="screen" href="css/videolayout_default.css?v=20" id="videolayout_default"/>
     <link href="//netdna.bootstrapcdn.com/font-awesome/4.0.3/css/font-awesome.css" rel="stylesheet">
     <link rel="stylesheet" href="css/jquery-impromptu.css?v=4">
     <link rel="stylesheet" href="css/modaldialog.css?v=3">

modules/UI/videolayout/LargeVideo.js

     if (isVisible) {
         LargeVideo.VideoLayout.largeVideoUpdated(currentSmallVideo);
 
-        $('#largeVideo').fadeIn(300);
+        $('#largeVideoWrapper').fadeIn(300);
     }
 }
 
                 '<img id="activeSpeakerAvatar" src=""/>' +
                 '<canvas id="activeSpeakerAudioLevel"></canvas>' +
             '</div>' +
-            '<video id="largeVideo" autoplay oncontextmenu="return false;"></video>' +
+            '<div id="largeVideoWrapper">' +
+                '<video id="largeVideo" autoplay oncontextmenu="return false;"></video>' +
+            '</div id="largeVideoWrapper">' +
             '<span id="videoConnectionMessage"></span>';
     html += '</div>';
     $(html).prependTo("#videospace");
                 // or null.
                 this.eventEmitter.emit(UIEvents.SELECTED_ENDPOINT, resourceJid);
             }
-            if (RTCBrowserType.isSafari()) {
-                // FIXME In Safari fadeOut works only for the first time
-                changeVideo(this.isLargeVideoVisible());
-            } else {
-                $('#largeVideo').fadeOut(300,
-                    changeVideo.bind($('#largeVideo'), this.isLargeVideoVisible()));
-            }
+            // We are doing fadeOut/fadeIn animations on parent div which wraps
+            // largeVideo, because when Temasys plugin is in use it replaces
+            // <video> elements with plugin <object> tag. In Safari jQuery is
+            // unable to store values on this plugin object which breaks all
+            // animation effects performed on it directly.
+            $('#largeVideoWrapper').fadeOut(300,
+                changeVideo.bind($('#largeVideo'), this.isLargeVideoVisible()));
         } else {
             if (currentSmallVideo) {
                 currentSmallVideo.showAvatar();
             getVideoSize = isDesktop ? getDesktopVideoSize : getCameraVideoSize;
             getVideoPosition = isDesktop ? getDesktopVideoPosition
                 : getCameraVideoPosition;
-            this.position(null, null);
+            this.position(null, null, null, null, true);
         }
     },
     /**
         var horizontalIndent = videoPosition[0];
         var verticalIndent = videoPosition[1];
 
-        positionVideo($('#largeVideo'),
+        positionVideo($('#largeVideoWrapper'),
             largeVideoWidth,
             largeVideoHeight,
             horizontalIndent, verticalIndent, animate);
                     document.body.style.background = 'black';
                     ToolbarToggler.dockToolbar(false);//fix that
                 });
-                $('#largeVideo').fadeIn(300, function () {
+                $('#largeVideoWrapper').fadeIn(300, function () {
                     self.setLargeVideoVisible(true);
                 });
                 break;