diff --git a/modules/colossussspBidAdapter.js b/modules/colossussspBidAdapter.js
index df011bc102d..22b0415936c 100644
--- a/modules/colossussspBidAdapter.js
+++ b/modules/colossussspBidAdapter.js
@@ -1,44 +1,31 @@
 import { registerBidder } from 'src/adapters/bidderFactory';
+import { BANNER, NATIVE, VIDEO } from 'src/mediaTypes';
 import * as utils from 'src/utils';
 
 const BIDDER_CODE = 'colossusssp';
 const URL = '//colossusssp.com/?c=o&m=multi';
 const URL_SYNC = '//colossusssp.com/?c=o&m=cookie';
 
-let sizeObj = {
-  '468x60': 1,
-  '728x90': 2,
-  '300x600': 10,
-  '300x250': 15,
-  '300x100': 19,
-  '320x50': 43,
-  '300x50': 44,
-  '300x300': 48,
-  '300x1050': 54,
-  '970x90': 55,
-  '970x250': 57,
-  '1000x90': 58,
-  '320x80': 59,
-  '640x480': 65,
-  '320x480': 67,
-  '320x320': 72,
-  '320x160': 73,
-  '480x300': 83,
-  '970x310': 94,
-  '970x210': 96,
-  '480x320': 101,
-  '768x1024': 102,
-  '1000x300': 113,
-  '320x100': 117,
-  '800x250': 118,
-  '200x600': 119
-};
+function isBidResponseValid(bid) {
+  if (!bid.requestId || !bid.cpm || !bid.creativeId || !bid.ttl || !bid.currency) {
+    return false;
+  }
 
-utils._each(sizeObj, (item, key) => sizeObj[item] = key);
+  switch (bid.mediaType) {
+    case BANNER:
+      return Boolean(bid.width && bid.height && bid.ad);
+    case VIDEO:
+      return Boolean(bid.vastUrl);
+    case NATIVE:
+      return Boolean(bid.native);
+    default:
+      return false;
+  }
+}
 
 export const spec = {
   code: BIDDER_CODE,
-
+  supportedMediaTypes: [BANNER, VIDEO, NATIVE],
   /**
    * Determines whether or not the given bid request is valid.
    *
@@ -46,9 +33,7 @@ export const spec = {
    * @return boolean True if this is a valid bid, and false otherwise.
    */
   isBidRequestValid: (bid) => {
-    return (!isNaN(bid.params.placement_id) &&
-    ((bid.params.sizes !== undefined && bid.params.sizes.length > 0 && bid.params.sizes.some((sizeIndex) => sizeObj[sizeIndex] !== undefined)) ||
-    (bid.sizes !== undefined && bid.sizes.length > 0 && bid.sizes.map((size) => `${size[0]}x${size[1]}`).some((size) => sizeObj[size] !== undefined))));
+    return Boolean(bid.bidId && bid.params && !isNaN(bid.params.placement_id));
   },
 
   /**
@@ -78,10 +63,12 @@ export const spec = {
     };
     for (let i = 0; i < validBidRequests.length; i++) {
       let bid = validBidRequests[i];
-      let placement = {};
-      placement['placementId'] = bid.params.placement_id;
-      placement['bidId'] = bid.bidId;
-      placement['sizes'] = bid.sizes;
+      let placement = {
+        placementId: bid.params.placement_id,
+        bidId: bid.bidId,
+        sizes: bid.sizes,
+        traffic: bid.params.traffic || BANNER
+      };
       placements.push(placement);
     }
     return {
@@ -103,15 +90,7 @@ export const spec = {
       serverResponse = serverResponse.body;
       for (let i = 0; i < serverResponse.length; i++) {
         let resItem = serverResponse[i];
-        if (resItem.width && !isNaN(resItem.width) &&
-            resItem.height && !isNaN(resItem.height) &&
-            resItem.requestId && typeof resItem.requestId === 'string' &&
-            resItem.cpm && !isNaN(resItem.cpm) &&
-            resItem.ad && typeof resItem.ad === 'string' &&
-            resItem.ttl && !isNaN(resItem.ttl) &&
-            resItem.creativeId && typeof resItem.creativeId === 'string' &&
-            resItem.netRevenue && typeof resItem.netRevenue === 'boolean' &&
-            resItem.currency && typeof resItem.currency === 'string') {
+        if (isBidResponseValid(resItem)) {
           response.push(resItem);
         }
       }
diff --git a/modules/colossussspBidAdapter.md b/modules/colossussspBidAdapter.md
index 9a5b9a0fe39..4760002f0db 100644
--- a/modules/colossussspBidAdapter.md
+++ b/modules/colossussspBidAdapter.md
@@ -18,7 +18,8 @@ Module that connects to Colossus SSP demand sources
                 bids: [{
                         bidder: 'colossusssp',
                         params: {
-                            placement_id: 0
+                            placement_id: 0,
+                            traffic: 'banner'
                         }
                     }]
                 }
diff --git a/test/spec/modules/colossussspBidAdapter_spec.js b/test/spec/modules/colossussspBidAdapter_spec.js
index e14d2f27b42..54952fbf4b5 100644
--- a/test/spec/modules/colossussspBidAdapter_spec.js
+++ b/test/spec/modules/colossussspBidAdapter_spec.js
@@ -16,17 +16,13 @@ describe('ColossussspAdapter', () => {
   };
 
   describe('isBidRequestValid', () => {
-    it('Should return true when placement_id can be cast to a number, and when at least one of the sizes passed is allowed', () => {
+    it('Should return true when placement_id can be cast to a number', () => {
       expect(spec.isBidRequestValid(bid)).to.be.true;
     });
     it('Should return false when placement_id is not a number', () => {
       bid.params.placement_id = 'aaa';
       expect(spec.isBidRequestValid(bid)).to.be.false;
     });
-    it('Should return false when the sizes are not allowed', () => {
-      bid.sizes = [[1, 1]];
-      expect(spec.isBidRequestValid(bid)).to.be.false;
-    });
   });
 
   describe('buildRequests', () => {
@@ -56,9 +52,10 @@ describe('ColossussspAdapter', () => {
       let placements = data['placements'];
       for (let i = 0; i < placements.length; i++) {
         let placement = placements[i];
-        expect(placement).to.have.all.keys('placementId', 'bidId', 'sizes');
+        expect(placement).to.have.all.keys('placementId', 'bidId', 'traffic', 'sizes');
         expect(placement.placementId).to.be.a('number');
         expect(placement.bidId).to.be.a('string');
+        expect(placement.traffic).to.be.a('string');
         expect(placement.sizes).to.be.an('array');
       }
     });
@@ -72,6 +69,7 @@ describe('ColossussspAdapter', () => {
     let resObject = {
       body: [ {
         requestId: '123',
+        mediaType: 'banner',
         cpm: 0.3,
         width: 320,
         height: 50,
@@ -88,7 +86,7 @@ describe('ColossussspAdapter', () => {
       for (let i = 0; i < serverResponses.length; i++) {
         let dataItem = serverResponses[i];
         expect(dataItem).to.have.all.keys('requestId', 'cpm', 'width', 'height', 'ad', 'ttl', 'creativeId',
-          'netRevenue', 'currency');
+          'netRevenue', 'currency', 'mediaType');
         expect(dataItem.requestId).to.be.a('string');
         expect(dataItem.cpm).to.be.a('number');
         expect(dataItem.width).to.be.a('number');
@@ -98,6 +96,7 @@ describe('ColossussspAdapter', () => {
         expect(dataItem.creativeId).to.be.a('string');
         expect(dataItem.netRevenue).to.be.a('boolean');
         expect(dataItem.currency).to.be.a('string');
+        expect(dataItem.mediaType).to.be.a('string');
       }
       it('Returns an empty array if invalid response is passed', () => {
         serverResponses = spec.interpretResponse('invalid_response');