diff --git a/player/ustream.coffee b/player/ustream.coffee
index c8055b11..b51a6171 100644
--- a/player/ustream.coffee
+++ b/player/ustream.coffee
@@ -1,3 +1,10 @@
+USTREAM_ERROR = 'Ustream.tv\'s embed player only works over plain HTTP, but you are
+    viewing this page over secure HTTPS.  Your browser therefore blocks the
+    ustream embed due to mixed content policy.  In order to view ustream, you must
+    view this page over plain HTTP (change "https://" to "http://" in the address
+    bar)-- your websocket will still be connecting using secure HTTPS.  This is
+    something that ustream needs to fix.'
+
 window.UstreamPlayer = class UstreamPlayer extends EmbedPlayer
     constructor: (data) ->
         if not (this instanceof UstreamPlayer)
@@ -8,5 +15,7 @@ window.UstreamPlayer = class UstreamPlayer extends EmbedPlayer
     load: (data) ->
         data.meta.embed =
             tag: 'iframe'
-            src: "https://www.ustream.tv/embed/#{data.id}?v=3&wmode=direct&autoplay=1"
+            src: "http://www.ustream.tv/embed/#{data.id}?v=3&wmode=direct&autoplay=1"
         super(data)
+
+    mixedContentError: USTREAM_ERROR
diff --git a/www/js/player.js b/www/js/player.js
index 722302c1..b2d37a88 100644
--- a/www/js/player.js
+++ b/www/js/player.js
@@ -1,5 +1,5 @@
 (function() {
-  var CUSTOM_EMBED_WARNING, CustomEmbedPlayer, DEFAULT_ERROR, DailymotionPlayer, EmbedPlayer, FilePlayer, HITBOX_ERROR, HitboxPlayer, ImgurPlayer, LivestreamPlayer, Player, RTMPPlayer, SoundCloudPlayer, TYPE_MAP, TwitchPlayer, UstreamPlayer, VideoJSPlayer, VimeoPlayer, YouTubePlayer, codecToMimeType, genParam, sortSources,
+  var CUSTOM_EMBED_WARNING, CustomEmbedPlayer, DEFAULT_ERROR, DailymotionPlayer, EmbedPlayer, FilePlayer, HITBOX_ERROR, HitboxPlayer, ImgurPlayer, LivestreamPlayer, Player, RTMPPlayer, SoundCloudPlayer, TYPE_MAP, TwitchPlayer, USTREAM_ERROR, UstreamPlayer, VideoJSPlayer, VimeoPlayer, YouTubePlayer, codecToMimeType, genParam, sortSources,
     extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
     hasProp = {}.hasOwnProperty;
 
@@ -1024,6 +1024,8 @@
 
   })(EmbedPlayer);
 
+  USTREAM_ERROR = 'Ustream.tv\'s embed player only works over plain HTTP, but you are viewing this page over secure HTTPS.  Your browser therefore blocks the ustream embed due to mixed content policy.  In order to view ustream, you must view this page over plain HTTP (change "https://" to "http://" in the address bar)-- your websocket will still be connecting using secure HTTPS.  This is something that ustream needs to fix.';
+
   window.UstreamPlayer = UstreamPlayer = (function(superClass) {
     extend(UstreamPlayer, superClass);
 
@@ -1037,11 +1039,13 @@
     UstreamPlayer.prototype.load = function(data) {
       data.meta.embed = {
         tag: 'iframe',
-        src: "https://www.ustream.tv/embed/" + data.id + "?v=3&wmode=direct&autoplay=1"
+        src: "http://www.ustream.tv/embed/" + data.id + "?v=3&wmode=direct&autoplay=1"
       };
       return UstreamPlayer.__super__.load.call(this, data);
     };
 
+    UstreamPlayer.prototype.mixedContentError = USTREAM_ERROR;
+
     return UstreamPlayer;
 
   })(EmbedPlayer);