DCR Taiwan Video Browser SDK

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Overview

The Nielsen SDK is one of multiple framework SDKs that Nielsen provides to enable measuring linear (live) and on-demand TV viewing using TVs, mobile devices, etc. The Browser SDK (BSDK) is the framework for website developers to integrate Nielsen Measurement into their media players. Nielsen SDKs are also equipped to measure static content and can track key life cycle events.

Prerequisites

Before you start the integration, you will need:

Item Description Source
☑ App ID (apid) Unique ID assigned to the player/site and configured by product. During initial implementation, a 'test' apid will be given. Once the implementation has been certified, a 'production' apid will then be generated and needs to be used before 'going live'. Contact Nielsen

Configure SDK

There are two steps required for configuring the SDK:

  • Add Static Queue Snippet
  • Create SDK Instance

Static Queue Snippet

The static queue snippet allows the SDK APIs to be called while the actual SDK and configuration file are still being downloaded. As the queue can capture all API calls before the download completes, there is no wait time. Once the SDK is available, the API calls will transition from directing to the queue to the SDK seamlessly.

Add the following script tag to the website: 

!function(e,n){
  function t(e){
    return"object"==typeof e?JSON.parse(JSON.stringify(e)):e
  }
  e[n]=e[n]||
  {
    nlsQ:function(o,r,c){
      var s=e.document,
      a=s.createElement("script");
      a.async=1,
      a.src=("http:"===e.location.protocol?"http:":"https:")+"//cdn-gl.imrworldwide.com/conf/"+o+".js#name="+r+"&ns="+n;
      var i=s.getElementsByTagName("script")[0];
      return i.parentNode.insertBefore(a,i),
      e[n][r]=e[n][r]||{g:c||{},
      ggPM:function(o,c,s,a,i){e[n][r].q=e[n][r].q||[];try{var l=t([o,c,s,a,i]);e[n][r].q.push(l)}
catch(e){console&&console.log&&console.log("Error: Cannot register event in Nielsen SDK queue.")}},
      trackEvent:function(o){e[n][r].te=e[n][r].te||[];try{var c=t(o);e[n][r].te.push(c)}
catch(e){console&&console.log&&console.log("Error: Cannot register event in Nielsen SDK queue.")}}},
      e[n][r]
    }
  }
}(window,"NOLBUNDLE");


Create SDK Instance

To initialize the SDK, create an SDK instance by making the initialization call:

Initialization API Call

NOLBUNDLE.nlsQ("<apid>", "<instanceName>",{nol_sdkDebug: "debug"});


When creating an instance, pass the following values: (nol_sdkDebug and optout are optional)

Parameter Description Values
apid Unique ID assigned to player/site

'TXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX' - Test Apid that starts with 'T'
'PXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX' - Production Apid that starts with 'P'

instanceName Name of SDK instance "any string value"
nol_sdkDebug Enables Nielsen console logging if desired. 
{nol_sdkDebug: "debug"} 
{nol_sdkDebug: "info"}
{nol_sdkDebug: "warn"}
{nol_sdkDebug: "true"}
optout Optional: OptOut global parameter. 1/0 or true/false

Example SDK Initialization

When the initialization call is made, a unique static configuration file, <apid>.js, will be downloaded based on the apid and will be cached on the user’s browser. 

var nSdkInstance = NOLBUNDLE.nlsQ("XXXXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXX", "nlsnInstance", {
    nol_sdkDebug: "debug",
    optout: "false"
});


Once the configuration is downloaded, the SDK itself will be downloaded and initialized. All SDK modules are included in one file: “nlsSDK600.bundle.min.js”. More information on OptOut Parameter under Privacy and Opt-Out.

Example SDK Configuration

The configuration should include the Static Queue Snippet and an SDK Instance for an unique App ID as shown in the example: 

<script type="text/javascript">
// Add Static Queue Snippet
!function(e,n){
  function t(e){
    return"object"==typeof e?JSON.parse(JSON.stringify(e)):e
  }
  e[n]=e[n]||
  {
    nlsQ:function(o,r,c){
      var s=e.document,
      a=s.createElement("script");
      a.async=1,
      a.src=("http:"===e.location.protocol?"http:":"https:")+"//cdn-gl.imrworldwide.com/conf/"+o+".js#name="+r+"&ns="+n;
      var i=s.getElementsByTagName("script")[0];
      return i.parentNode.insertBefore(a,i),
      e[n][r]=e[n][r]||{g:c||{},
      ggPM:function(o,c,s,a,i){e[n][r].q=e[n][r].q||[];try{var l=t([o,c,s,a,i]);e[n][r].q.push(l)}
catch(e){console&&console.log&&console.log("Error: Cannot register event in Nielsen SDK queue.")}},
      trackEvent:function(o){e[n][r].te=e[n][r].te||[];try{var c=t(o);e[n][r].te.push(c)}
catch(e){console&&console.log&&console.log("Error: Cannot register event in Nielsen SDK queue.")}}},
      e[n][r]
    }
  }
}(window,"NOLBUNDLE");
 
// Created SDK Instance
var nSdkInstance = NOLBUNDLE.nlsQ("XXXXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXX", "nlsnInstance", {nol_sdkDebug: "debug"});
</script>

Create Metadata Objects

There are two types of asset metadata:

  • content: identify video
  • ad: identify each ad

The metadata received for each asset is used for classification and reporting.

Metadata can be passed through key-values using the Nielsen reserved keys. User will need to set up content and ad objects with the required Nielsen keys as shown in the sample code below.

Content Metadata

Content metadata should remain constant throughout the entirety of an episode/clip including when ads play.

Key Description Values Required
clientid

parent ID – value is automatically populated through provided App ID.
In order to override the brand configured to the App ID, pass parent
value here and the sub-brand ID associated to that brand in the subbrand
key (e.g. multiple brands in App)

Nielsen provided

subbrand sub-brand ID – value is automatically populated through provided

App ID. In order to override the sub-brand configured to the App ID, value can
be passed here (e.g. multiple sub-brands in App)

Nielsen provided

type type of asset "content" ✓
assetid unique ID assigned to asset custom
(no Special Characters). The Content ID should be populated here which should correspond to the same value in the post transmission logs.		 ✓
program name of program custom ✓
title episode name custom ✓
length length of content in seconds seconds (86400 for live stream) ✓
segB custom segment B. Custom segments can be used to aggregate content however you choose. Some examples include genre, category, or platform. custom
segC custom segment C. Custom segments can be used to aggregate content however you choose. Some examples include genre, category, or platform. custom
isfullepisode full episode flag
  • 'y', 'yes', or 'lf' – full episode
  • 'n', 'no', or 'sf' – non full episode

Note: For livestream content with Dynamic Ad Insertion (DAI), the isfullepisode value should be set to 'y'.

✓

adloadtype type of Ad load:
  • 1) Linear – matches TV Ad load. Content with linear Ad Load is not eligible for DCR measurement and will not be included in DCR reporting.
  • 2) Dynamic – Dynamic Ad Insertion (DAI)
  • "1" – content with linear Ads. Note: Content with linear Ad load is not included in DCR measurement.
  • "2" – content with dynamic Ads

✓

Example Content Object

var contentMetadataObject =
{  
  type:           'content',
  assetid:        'VID-123456',
  program:        'program name',
  title:          'episode title',
  length:         'length in seconds',
  isfullepisode:  'y',
  adloadtype:     '2',
  segB:           'custom segment B', // optional
  segC:           'custom segment C', // optional
};

Ad Metadata

The Ad Metadata (if applicable) should be passed for each individual ad.

Keys Description Values Required
type type of Ad 'preroll', 'midroll', 'postroll'
'ad' - If specific type can not be identified.		 ✓
assetid unique ID assigned to Ad custom ✓

Example Ad Object

var adMetadataObject = 
{  
  type:    'preroll',
  assetid: 'AD-1'
};


URL Character Limit: There is a URL character limit of 2K characters due to browser limitations. Exceeding this value could impair data delivery on particular browsers.

Call Nielsen APIs

The method for calling events is ggPM(). 

nSdkInstance.ggPM('event', parameter, ...);

Interrupt Scenarios

Pause Event

The setPlayheadPostion event is used for handling pause. To indicate pause, stop passing the playhead position to the SDK. Once the content resumes, begin sending the playhead again with the correct playhead value.

Other Interrupt Scenarios

The following possible browser interruption scenarios must be handled:

  • Browser/Tab close
  • Leaving the page to another destination
  • Pressing the stop button
  • Network Loss

There are many cases where the player itself has the ability to detect such situations. If not, these interruption scenarios can be handled through JavaScript. The events that are called will depend on the asset being played (e.g. midroll vs. content). 

window.addEventListener('beforeunload', function(event) 
{
  // Only inside a midroll indicate <stop> for the ad
  nSdkInstance.ggPM('stop', playheadPosition);
  
  // Indicate <end> and <stop> for the content
  nSdkInstance.ggPM('end', playheadPosition);
  nSdkInstance.ggPM('stop', playheadPosition);
});

Note: User may need to add code to support specific browser versions (e.g. older versions of Internet Explorer).

SDK Events

Event Parameter Description
'loadMetadata' content/ad metadata object Needs to be called at the beginning of each asset
'setPlayheadPosition' playhead position as integer

VOD: || current position in seconds
Live: current Unix timestamp (seconds since Jan-1-1970 UTC)
Note: 'setPlayheadPosition' has to be called every second

Pass playhead position every second during playback

'stop' playhead position in seconds Call when content or ads complete playing and pass playhead position
'end' playhead position in seconds Call when the current video asset completes playback and pass the playhead position.

Example: At the end of the content stream, if the user switches to another piece of content, when the browser is refreshed or closed.

SDK Playhead Event Sequence

The sample event lifecycles can be used as a reference for identifying the order for calling events.

Content Playback

// START OF STREAM
nSdkInstance.ggPM('loadMetadata', contentMetadataObject); 
 
// CONTENT PLAYS
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
//  
//   pass playhead every second
//   
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);

// END OF STREAM
nSdkInstance.ggPM('end', playheadPosition);


Content Playback with Ads

// START OF STREAM
nSdkInstance.ggPM('loadMetadata', contentMetadataObject); 
 
// PREROLL
nSdkInstance.ggPM('loadMetadata', prerollMetadataObject);
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
//  
//   pass playhead every second
//   
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
nSdkInstance.ggPM('stop', playheadPosition);
 
// CONTENT
nSdkInstance.ggPM('loadMetadata', contentMetadataObject);
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
//  
//   pass playhead every second
//   
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
nSdkInstance.ggPM('stop', playheadPosition);

// MIDROLL
nSdkInstance.ggPM('loadMetadata', midrollMetadataObject);
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
//  
//   pass playhead every second
//   
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
nSdkInstance.ggPM('stop', playheadPosition);
 
// CONTENT RESUMES
nSdkInstance.ggPM('loadMetadata', contentMetadataObject);
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
//  
//   pass playhead every second
//   
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);

// END OF STREAM
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
nSdkInstance.ggPM('end', playheadPosition);
 
// POSTROLL
nSdkInstance.ggPM('loadmetadata', postrollMetadataObject);
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
//  
//   pass playhead every second
//   
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
nSdkInstance.ggPM('stop', playheadPosition);
  • 'setPlayheadPosition' is used for calculating duration and must be passed every second. The final playhead position must be sent for the current asset being played before calling 'stop', 'end', or 'loadmetadata'.
  • For Ad Pods, events must be called for each individual Ad. Each Ad playhead position should begin at ‘0’ when ad starts.
  • When content has resumed following an ad break, the playhead position update must continue where previous content segment left off. The playhead position should be passed as a rounded number with no decimals.

Privacy and Opt-Out

There are two primary methods for implementing user Opt-out preferences:

  1. User Opt Out - Provide a link to the Nielsen Privacy Policy page when a User can make their selection
  2. Initialization Opt Out - Global OptOut Parameter

User Opt Out

The site must provide a means for the user to opt-out of, or opt back into, Nielsen Measurement. A user can opt-out if they would prefer not to participate in any Nielsen online measurement research. To implement the User Opt-Out option, include the following two items in your privacy policy.

On the Nielsen Digital Measurement Privacy Policy page, users can click Choices to read more detailed information about the measurement software, learn about their options with regard to Nielsen measurement, and, if they do not want to participate in Nielsen online measurement, click a link to receive an opt-out cookie.

  • Once users have opted out via this link, their browser cookies will contain the value TOTAL_OPTOUT. This will prevent a redirect to our data provider from occurring
  • Users can opt back in via this link. When a user selects that link, their opt-out cookie will be deleted and they will be able to be measured moving forward.


The following paragraph is a template for a Privacy Statement.

The properties may feature Nielsen proprietary measurement software, which will allow users to contribute to market research, such as Nielsen Digital Content Ratings. To learn more about the information that Nielsen software may collect and your choices with regard to it, please see the Nielsen Digital Measurement Privacy Policy at https://www.nielsen.com/tw/en/legal/privacy-statement/digital-measurement/

User Opt Back In

Once users have opted-out, they can choose to opt back into Nielsen Measurement at anytime by selecting the opt back in link on the Nielsen Digital Privacy Policy page. When a user selects the link, their opt-out cookie will be deleted and they will be able to be measured.

Initialization Opt Out

The BSDK600 now supports the ability to optout on initialization of the SDK by allowing an optout global parameter to be passed. This optout will be maintained through the session of the SDK instance. Specifications and limitations are specified below.

Type Supported Values Notes Optout
optout True, Yes, or 1 Case is insensitive and can be string or bool

Example: nlsQ("XXXXXXXX-BH45-JKY6-BKH7-67GJKY68GJK7", "myInstance", { optout: true});

Ping parameter will set uoo=true.
optout False, No, or 0 Case is insensitive and can be string or bool

Example: nlsQ("XXXXXXXX-BH45-JKY6-BKH7-67GJKY68GJK7", "myInstance", { optout: false});

Ping parameter will set uoo to blank.

Example of using OptOut

var nSdkInstance = NOLBUNDLE.nlsQ("XXXXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXX", "nlsnInstance", {
  nol_sdkDebug: "debug",
  optout: "true"
});

Opt Out Overview

Browser Cookie uoo value in session ping Final Optout Status
Default Value no uoo value or uoo=0 Not Opted Out
Default Value uoo=1 Opted Out

Going Live

After the integration has been certified, users will need to make a couple of updates to the initialization call to ensure that player will be measured properly. Ensure that a production apid (starting with 'P') is used after going live. Disable debug logging by deleting {nol_sdkDebug: 'DEBUG'} from initialization call.

Example Production Initialization Call 

var nSdkInstance = NOLBUNDLE.nlsQ("PXXXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXX", "nlsnInstance", { optout: "false"});
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