The Brightcove Player Prebid Plugin can be integrated on the publisher’s page in such a way that the pre-bidding can be executed in the header of the page before the Brightcove Player is loaded.
The following is a sample Brightcove Player Prebid Plugin integration that invokes Prebid in the header before Brightcove Player has been loaded.
<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>Brightcove Player Prebid Plugin - Prebid in Header</title>
    <link href="https://acdn.adnxs.com/video/plugins/css/mol/bc_vpaid_vast_mo.css" rel="stylesheet">
    <link href="https://acdn.adnxs.com/video/plugins/bc/prebid/bc_prebid_vast_vjs.css" rel="stylesheet">
    <script>
        // define the prebid options variable
        // NOTE:  you MUST use this variable name
        window.bc_plugin_pbjs = { plugin_prebid_options: {} };
        // specify prebid parameters as the value of biddersSpec
        // the set of bidders here shows how to specify the AppNexus video bidder:  appnexus
        var params = {
            code : 'my-video-tag',
            mediaTypes: {
		video: {
		  context: 'instream',
                  playerSize: [640, 480],
                  mimes: ['video/mp4'],
                  protocols: [1, 2, 3, 4, 5, 6, 7, 8],
                  playbackmethod: [2],
                  skip: 1
		}
            bids: [
                {
                    bidder: 'appnexus',
                    params: {
                        placementId: 12334567
                    }
                }
            ]
        };
        window.bc_plugin_pbjs.plugin_prebid_options.biddersSpec = params;
        // set the Google Ad Manager Parameters
        var dfpParams = {
            params : {
                iu : '/1234456/prebid_cache_video_ad_unit_test',
                output : 'vast'
            }
        };
        window.bc_plugin_pbjs.plugin_prebid_options.dfpParameters = dfpParams;
    </script>
    <script type="text/javascript" src="https://acdn.adnxs.com/video/plugins/bc/prebid/bc_prebid_vast.min.js"></script>
</head>
<body >
    <div style="background: #ff8800; color: #ffffff; overflow:scroll; width:1000px; height:800px;">
        <div id="parentContainer1" style="width:640px; position:absolute; top:100px; left:70px; z-index:1000;">
            <video id="player"
                data-video-id="1234567890"
                data-account="1234567890"
                data-player="ABCDEFGH"
                data-embed="default"
                data-application-id
                class="video-js" controls width="600" height="337.5"></video>
            <script src="//players.brightcove.net/5530036758001/HJMTvh2YZ_default/index.min.js"></script>
        </div>
    </div>
<script>
    // register the plugin
    BCVideo_PrebidVastPlugin.init();
    // set the render options
    var renderoptions = {};
    // set timeOffset for a preroll
    renderoptions.timeOffset = 'start';
    // other publisher preferences can be passed in if needed
    renderoptions.skippable = {enabled: true, videoThreshold : 16, videoOffset : 5};
    BCVideo_PrebidVastPlugin.renderAd(renderoptions, 'player');
</script>
</body>
</html>