DCR Video Browser SDK

Engineering Portal / Digital / DCR & DTVR / DCR Video Browser SDK

Prerequisites

To get started, an App ID is needed. The App ID is a unique ID assigned to the player/site/app. This will be provided upon starting the integration.

apid: "PXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"

Configure SDK

There are two steps required for configuring the SDK:

• Add Static Queue Snippet
• Create SDK Instance

Static Queue Snippet

Add the following script tag to the website:

<script>
!function(t,n)
{
  t[n]=t[n]||
  {
    nlsQ:function(e,o,c,r,s,i)
    {
     return s=t.document,
     r=s.createElement("script"),
     r.async=1,
     r.src=("http:"===t.location.protocol?"http:":"https:")+"//cdn-gl.imrworldwide.com/conf/"+e+".js#name="+o+"&ns="+n,
     i=s.getElementsByTagName("script")[0],
     i.parentNode.insertBefore(r,i),
     t[n][o]=t[n][o]||{g:c||{},
     ggPM:function(e,c,r,s,i){(t[n][o].q=t[n][o].q||[]).push([e,c,r,s,i])}},t[n][o]
    }
  }
}

(window,"NOLBUNDLE");

var nSdkInstance = NOLBUNDLE.nlsQ("PXXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX", "nlsnInstance");

</script>

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.

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 three values:

Parameter	Description	Values
apid	Unique ID assigned to player/site	'PXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX'
instanceName	Name of SDK instance	"any string value"
nol_sdkDebug	Enables Nielsen console logging. Only required for testing	"{nol_sdkDebug: "debug"})"

Example SDK Initialization

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

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.

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”.

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(t,n)
 {
   t[n]=t[n]||{nlsQ:function(e,o,c,r,s,i)
   {
    return s=t.document,
    r=s.createElement("script"),
    r.async=1,
    r.src=("http:"===t.location.protocol?"http:":"https:")+"//cdn-gl.imrworldwide.com/conf/"+e+".js#name="+o+"&ns="+n,
    i=s.getElementsByTagName("script")[0],
    i.parentNode.insertBefore(r,i),
    t[o]=t[o]||{g:c,ggPM:function(n,e,c,r,s){(t[o].q=t[o].q||[]).push([n,e,c,r,s])}},
    t[o]
   }
 }
} 
(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 completion of an episode / clip including the 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
vcid	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	✓
program	name of program (25 character limit)	custom	✓
title	episode title (40 character limit)	custom	✓
length	length of content in seconds	seconds 86400 for live stream)	✓
mediaURL	URL location of the content being streamed	custom	✓
segB	custom segment B	custom
segC	custom segment C	custom
airdate	the airdate in the linear TV	YYYYMMDD HH:MI:SS	✓
isfullepisode	full episode flag	"y"– full episode "n"– non full episode	✓
crossId1	standard episode ID	custom	✓
crossId2	content originator (only required for distributors)	Nielsen provided
adloadtype	type of ad load: 1) - Linear – matches TV ad load 2) Dynamic – Dynamic Ad Insertion (DAI)	"1" – content with linear ads "2" – content with dynamic ads	✓

Example Content Object

var contentMetadataObject =
{  
  type:           'content',
  assetid:        'VID123-123456',
  program:        'program name',
  title:          'episode title',
  length:         'length in seconds',
  mediaURL:       'http://www.site.com/videoAsset',
  segB:           'custom segment B',
  segC:           'custom segment C',
  airdate:        'YYYYMMDD HH:MI:SS',
  isfullepisode:  'y',
  crossId1:       'Standard Episode ID',
  crossId2:       'Content Originator',
  adloadtype:     '2'
};

Ad Metadata Object

The ad metadata should be passed for each individual ad.

Keys	Description	Values	Required
type	type of ad	'preroll', 'midroll', or 'postroll'	✓
assetid	unique ID assigned to ad	custom	✓

Example Ad Object

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

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

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 UTC timestamp Note: 'setPlayheadPosition' has to be called every second	Pass playhead position every second during playback
'stop'	playhead position	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 lifecycle can be used as a reference for identifying the order for calling events.

// 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
nSdkInstance.ggPM('loadMetadata', contentMetadataObject);
nSdkInstance.ggPM('setPlayheadPosition', playheadPosition);
//  
//   pass playhead every second
//   
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.

Nielsen 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 opt-out option, include the following two items in your privacy policy.

• A notice that the player includes proprietary measurement software that allows users to contribute to market research (such as Nielsen TV Ratings).
• A link to the Nielsen Digital Measurement Privacy Policy at http://www.nielsen.com/digitalprivacy.

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.

The following paragraph is a template for an opt-out statement.

The properties may feature Nielsen proprietary measurement software, which will allow users to contribute to market research, such as Nielsen TV 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 http://www.nielsen.com/digitalprivacy.

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.

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. Disable debug logging by deleting {nol_sdkDebug: 'DEBUG'} from initialization call. Example Production Initialization Call

var nSdkInstance = NOLBUNDLE.nlsQ("PXXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX", "nlsnInstance");