/Web APIs


Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

msPlayToSource is a read-only property which gets the source associated with the media element for use by the PlayToManager.

This proprietary property is specific to Internet Explorer and Microsoft Edge.


ptr = object.msPlayToSource;


PlayTo is a means through which an app can connect local playback/display for audio, video, and img elements to a remote device. For more information, see the Windows.Media.PlayTo APIs.

msPlayToSource is used in the sourceRequested handler -- get the PlayToSource object from an audio, video, or img element using the msPlayToSource property and pass it to e.setSource, then set the PlayToSource.next property to the msPlayToSource of another element for continual playing.

The property value for msPlayToSource is the source associated with the media element.


<video id="videoplayer" src="http://www.contoso.com/clip.mp4" controls autoplay />
<script type="text/javascript">

  // Step 1: Obtain PlayToManager object for app's current view.
    var ptm = Windows.Media.PlayTo.PlayToManager.getForCurrentView();

  // Step 2: Register for the sourcerequested event (user swipes Devices charm).
    ptm.addEventListener("sourcerequested", function(e) {

  // Step 3: Specify the media to be streamed (to filter devices).

  // The media will then be streamed to the device chosen by the user in the UI.


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