Radiant Media Player

Video ads documentation (rmp-vast)

Last updated on September 1, 2017.


rmp-vast is a lightweight open-source client-side JavaScript solution to load, parse and display VAST resources. It is maintained by Radiant Media Player team and is offered as an alternative to the Google IMA SDK. The main purpose of rmp-vast is to offer a VAST 3 compliant solution to display video ads in web-based mobile applications for iOS and Android (WebView, Ionic, PhoneGap, Cordova ...) as the Google IMA SDK is not compatible with those environments. rmp-vast can also be used in environments like desktop or mobile browsers.

When delivering Google video ads (DoubleClick for Publishers, AdSense for Video or DoubleClick Ad Exchange) we recommend using the Google IMA SDK with Radiant Media Player whenever possible.

Supported features for rmp-vast

rmp-vast supports the following VAST 3 features:

  • Inline and Wrapper Ads
  • Linear Ads (MP4/WebM or HLS where natively supported)
  • Skippable Linear Ads (MP4/WebM or HLS where natively supported)
  • Non Linear Ads (Images)
  • Tracking Events
  • Error Reporting
  • Industry Icons
  • VAST 3 Macros

VAST 2 resources should also be compatible with rmp-vast.

Additional supported features include a mobile friendly UI and autoplay support (muted autoplay on mobiles).

The following VAST/player features are not supported with rmp-vast: Ad Pods, Companion Ads, VPAID, VMAP, Audio ads, ad waterfalling through the adTagWaterfall setting, ad scheduling, outstream ads. Radiant Media Player supports those features through the Google IMA SDK.

Supported environments for rmp-vast


  • Chrome for Android 5+
  • Chrome for Desktop
  • Firefox for Android 5+
  • Firefox for Desktop
  • Safari 10+ for macOS
  • Safari for iOS 10+
  • MS Edge for Desktop
  • Internet Explorer 11+ for Desktop
  • Opera for Desktop
  • Vivaldi for Desktop

Specifically we support the latest stable release for each browser.


  • Android 5+
  • iOS 10+

Quick start example

Player settings for using rmp-vast are very similar to using Google IMA SDK. The only difference resides in specifying the VAST parser which you want to use through the adParser setting.

<!-- Include Radiant Media Player JavaScript file in your <body> or <head> -->
<script src="https://cdn.radiantmediatechs.com/rmp/4.4.19/js/rmp.min.js" 
<!-- Set up your wrapper div with its unique id -->
<div id="rmpPlayer"></div>
// First we specify bitrates to feed to the player
// You can use HLS, DASH or progressive download or a combination of those protocols
// You can use ads with on-demand, live or DVR content
var bitrates = {
  hls: 'https://dqwp3xzzbfhtw.cloudfront.net/vod/smil:bbb.smil/playlist.m3u8'
// Then we set our player settings
var settings = {
  licenseKey: 'your-license-key',
  bitrates: bitrates,  
  delayToFade: 3000,
  width: 640,
  height: 360,
  ads: true,
  // We tell the player to use rmp-vast to load and parse VAST resources
  adParser: 'rmp-vast',
  // We pass our adTag here - the player knows what to do with it
  adTagUrl: 'https://www.radiantmediaplayer.com/vast/tags/inline-linear-5.xml',
  poster: 'https://www.radiantmediaplayer.com/images/poster-rmp-showcase.jpg'
var elementID = 'rmpPlayer';
var rmp = new RadiantMP(elementID);

Supported player settings

ads: Boolean

Activate or not ads within the player. Default: false.

adTagUrl: String

Specifies the ad tag url that is requested by the player from the ad server. Default: ''.
You need to use fully qualified URL for your adTagUrl

adParser: String

Specifies which VAST parser the player should use. Possible values are 'rmp-vast' and 'ima'. Default: 'ima'.

adAjaxTimeout: Number

Represents the Ajax timeout in milliseconds for each VAST request (or VAST wrapper). When timeout is reached without a valid server response the VAST loading process is aborted. Default: 8000.

adAjaxWithCredentials: Boolean

AJAX request to load VAST tag from ad server should or should not be made with credentials. Default: true.

adMaxNumRedirects: Number

Specifies the maximum number of redirects before the subsequent redirects will be denied, and the ad load aborted. The number of redirects directly affects latency and thus user experience. This applies to all VAST wrapper ads. Default: 4.

adPauseOnClick: Boolean

When set to true this setting will cause to pause the playing linear ad (or content for a non-linear ad) when the ad is interacted with. Default: true. On some devices the browser may still decide to pause a video asset when a new window opens.

adCountDown: Boolean

A countdwon to be displayed within the player control bar. It shows the remaining time for the video ads. Default: false.

Player labels for rmp-vast

See our documentation about player labels here.

var labels = {
  ads: {
    controlBarCustomMessage: 'Ad',
    skipMessage: 'Skip ad',
    skipWaitingMessage: 'Skip ad in',
    textForClickUIOnMobile: 'Learn more'

labels.ads.skipMessage: the skip message to show on player when a skippable ad is detected and the ad is in a state where it can be skipped. Default: 'Skip ad'

labels.ads.skipWaitingMessage: the skip message to show on player when a skippable ad is detected and the ad is in a state where it cannot be skipped. Default: 'Skip ad in'. This will be completed by the number of seconds remaining before the ad state changes to a state where it can be skipped.

labels.ads.textForClickUIOnMobile: on mobile devices the click-through URL for a linear ad is provided in a box located at the top right corner of the player. This setting set the text for this box. Default: 'Learn more'.

rmp-vast API events

Events are registered as explained in our Ads API documentation. Available events when using rmp-vast are:

  • adtagstartloading
  • adtagloaded
  • adfollowingredirect
  • adloaded
  • addurationchange
  • adimpression
  • adstarted
  • adpaused
  • adresumed
  • adskipped
  • adskippablestatechanged
  • adfirstquartile
  • admidpoint
  • adthirdquartile
  • adcomplete
  • adclick
  • adclosed
  • advolumemuted
  • advolumechanged
  • aderror
  • addestroyed

rmp-vast API methods

Ads API methods are described and queried as explained in Ads API documentation. Available methods when using rmp-vast are:

  • getAdLinear
  • getAdSystem
  • getAdContentType
  • getAdTitle
  • getAdDescription
  • getAdDuration
  • getAdMediaUrl
  • getAdMediaHeight
  • getAdMediaWidth
  • getAdCurrentTime
  • getAdOnStage
  • getAdPaused
  • getAdTagUrl
  • loadAds
  • stopAds
  • getAdUI
  • setAdUI
  • getAdErrorMessage
  • getAdVastErrorCode
  • play
  • pause
  • getVolume
  • setVolume
  • getMute
  • setMute

Other general player API methods and events may also be available.

Autoplay support

As with using the Google IMA SDK, autoplay of pre-roll linear video ad assests on desktop and muted autoplay on mobile are supported. Refer to our documentation about autoplay support for more information.


rmp-vast support macros desribed in the VAST 3 specification:

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License.