diff --git a/modules/gammaBidAdapter.js b/modules/gammaBidAdapter.js
index 8240df3d151..ce5c4ef2544 100644
--- a/modules/gammaBidAdapter.js
+++ b/modules/gammaBidAdapter.js
@@ -8,6 +8,7 @@ const BIDDER_CODE = 'gamma';
 export const spec = {
   code: BIDDER_CODE,
   aliases: ['gamma'],
+  supportedMediaTypes: ['banner', 'video'],
 
   /**
    * Determines whether or not the given bid request is valid.
@@ -29,7 +30,7 @@ export const spec = {
     const gaxObjParams = find(bidRequests, hasParamInfo);
     return {
       method: 'GET',
-      url: '//' + ENDPOINT + '/adx/request?wid=' + gaxObjParams.params.siteId + '&zid=' + gaxObjParams.params.zoneId + '&hb=pbjs&bidid=' + gaxObjParams.bidId + '&urf=' + utils.getTopWindowUrl()
+      url: '//' + ENDPOINT + '/adx/request?wid=' + gaxObjParams.params.siteId + '&zid=' + gaxObjParams.params.zoneId + '&hb=pbjs&bidid=' + gaxObjParams.bidId + '&urf=' + encodeURIComponent(utils.getTopWindowUrl())
     };
   },
 
@@ -50,6 +51,15 @@ export const spec = {
     }
 
     return bids;
+  },
+
+  getUserSyncs: function(syncOptions) {
+    if (syncOptions.iframeEnabled) {
+      return [{
+        type: 'iframe',
+        url: '//' + ENDPOINT + '/adx/usersync'
+      }];
+    }
   }
 }
 
@@ -76,6 +86,7 @@ function newBid(serverBid) {
   if (serverBid.type == 'video') {
     Object.assign(bid, {
       vastXml: serverBid.seatbid[0].bid[0].vastXml,
+      vastUrl: serverBid.seatbid[0].bid[0].vastUrl,
       ttl: 3600
     });
   }
diff --git a/modules/gammaBidAdapter.md b/modules/gammaBidAdapter.md
index 83c1fdf4853..2902be78492 100644
--- a/modules/gammaBidAdapter.md
+++ b/modules/gammaBidAdapter.md
@@ -12,7 +12,7 @@ Connects to Gamma exchange for bids.
 
 Gamma bid adapter supports Banner, Video.
 
-# Test Parameters
+# Test Parameters: For Banner
 ```
 var adUnits = [{
           code: 'gamma-hb-ad-123456-0',
@@ -29,6 +29,23 @@ var adUnits = [{
   
         }];
 ```
+# Test Parameters: For Video
+```
+var adUnits = [{
+          code: 'gamma-hb-ad-78910-0',
+          sizes: [[640, 480]],
+  
+          // Replace this object to test a new Adapter!
+          bids: [{
+			bidder: 'gamma',
+            params: {
+				siteId: '1465446377',
+				zoneId: '1493280341'
+            }
+          }]
+  
+        }];
+```
 # Ad Unit and Setup: For Testing
 In order to receive bids please map localhost to (any) test domain.