Prebid Video | Prebid Server Example with JW Player (Player7)

An example of a pre-roll ad using Prebid Server and JW Player (Player7).

Important: This example uses a test version of Prebid.js hosted on our CDN that is not recommended for production use. It includes all available adapters. Production implementations should build from source or customize the build using the Download page to make sure only the necessary bidder adapters are included.

Warning: Do not forget to exchange the placementId in the code examples with your own placementId!

Place this code in the page header.

<script type="text/javascript" src=""></script>
<script type="text/javascript">
    jwplayer.key = "YEUwUA9wRFeDcydr"; //Test Key - replace this with your own valid JWPlayer license key
    var pbjs = pbjs || {};
    pbjs.que = pbjs.que || [];

    /* PRE-DEFINE `invokeVideoPlayer`

    Because we have no way of knowing when all the bids will be
    returned from Prebid we can't be sure that the browser will
    reach the point where `invokeVideoPlayer` is defined before
    `bidsBackHandler` fires and tries to call it.

    To prevent an "`invokeVideoPlayer` not defined" error, we
    pre-define it before we make the call to Prebid, and redefine
    it later on with the code to create the player and play the

    In this first version, it simply stores the winning VAST to
    use later. */

    var tempTag = false;
    var invokeVideoPlayer = function(url) {
        tempTag = url;

    /* Prebid video ad unit */

    var videoAdUnit = {
        code: 'video1',
        mediaTypes: {
            video: {
                playerSize: [640, 480],
                context: 'instream',
                mimes: ['video/mp4'],
                protocols: [1, 2, 3, 4, 5, 6],
                playbackmethod: [2]
        bids: [{
            bidder: 'appnexus',
            params: {
                placementId: 13232361, // Add your own placement id here
video: { skippable: true, playback_method: ['auto_play_sound_off'] } } }] }; pbjs.que.push(function() { // configure prebid to use prebid cache and prebid server   // make sure to add your own accountId to your s2sConfig object
pbjs.setConfig({ cache: { url: '' }, debug: true, enableSendAllBids: true, s2sConfig: { endpoint: '', enabled: true, accountId: 'c9d412ee-3cc6-4b66-9326-9f49d528f13e', bidders: ['appnexus'] } }); pbjs.addAdUnits(videoAdUnit); // add your ad units to the bid request
pbjs.requestBids({ bidsBackHandler: function(bids) { var videoUrl = pbjs.adServers.dfp.buildVideoUrl({ adUnit: videoAdUnit, params: { iu: '/19968336/prebid_cache_video_adunit', cust_params: { section: 'blog', anotherKey: 'anotherValue' }, output: 'vast' } }); invokeVideoPlayer(videoUrl); } }); }); </script>

Place this code in the page body.

    var jwPlayerInstance = jwplayer("playerContainerJW");
    invokeVideoPlayer = function(url) {
        console.log("starting player with url " + url);
            "file": "",
            "width": 640,
            "height": 480,
            "autostart": true,
            "mute": true,
            "advertising": {
                client: "vast",

        jwPlayerInstance.on('beforePlay', function() {

    if (tempTag) {
        tempTag = false;