Overview

You can use the TVSDK configuration file (AdobeTVSDKConfig.json) to update the priorities for ad creative selection on VAST/VMAP responses. You can also use this configuration file to define the source URL transformation rules for ad creatives.

When your video player makes a request to an ad server, the VAST/VMAP response usually includes multiple ad creatives ( MediaFile elements), each of which provides a URL to a different container-codec version. In some cases, ad creatives in the VAST/VMAP response each provide a different bitrate for the ad. If you want to specify your own priority and transformation rules for these ad creatives, you can do so in the AdobeTVSDKConfig.json configuration file.

You can specify two types of rules in AdobeTVSDKConfig.json: Priority rules and Normalize rules.

Disabling Pre-Roll

To disable pre-roll you will need to change the default opportunity generators to not make the pre-roll call. By default, TVSDK uses the following opportunity generators:

/**
 * @inheritDoc
 */
override protected function doRetrieveGenerators(item:MediaPlayerItem):Vector.<OpportunityGenerator> {
    var result:Vector.<OpportunityGenerator> = new Vector.<OpportunityGenerator>();
    result.push(new AdSignalingModeOpportunityGenerator());
    result.push(new SpliceOutOpportunityGenerator());
    return result;
}

To disable the pre-roll on live streams, this should change to include only the SpliceOutOpportunityGenerator:

/**
 * @inheritDoc
 */
override protected function doRetrieveGenerators(item:MediaPlayerItem):Vector.<OpportunityGenerator> {
    var result:Vector.<OpportunityGenerator> = new Vector.<OpportunityGenerator>();
    if (preroll_enabled == true) {
        result.push(new AdSignalingModeOpportunityGenerator());
    }
    result.push(new SpliceOutOpportunityGenerator());
    return result;
}