Playing a video from an RTMP server using the Spark VideoPlayer control in Flex 4

The following example shows how you can load a recorded F4V video from an RTMP server in a Spark VideoPlayer control in Flex 4 by setting the source property to a DynamicStreamingVideoSource object.

Full code after the jump.

The following example(s) require Flash Player 10 and the Adobe Flex 4 SDK. To download the Adobe Flash Builder 4 trial, see To download the latest nightly build of the Flex 4 SDK, see

For more information on getting started with Flex 4 and Flash Builder 4, see the official Adobe Flex Team blog.

<?xml version="1.0" encoding="utf-8"?>
<!-- -->
<s:Application name="Spark_VideoPlayer_DynamicStreamingVideoSource_test"
    <s:VideoPlayer id="vidPlyr"
            left="100" right="100"
            top="100" bottom="100"
            horizontalCenter="0" verticalCenter="0">
            <s:DynamicStreamingVideoSource host="rtmp://" streamType="recorded">
                <s:DynamicStreamingVideoItem streamName="mp4:_cs4promo_1000.f4v" />

This entry is based on a beta version of the Flex 4 SDK and therefore is very likely to change as development of the Flex SDK continues. The API can (and will) change causing examples to possibly not compile in newer versions of the Flex 4 SDK.

4 thoughts on “Playing a video from an RTMP server using the Spark VideoPlayer control in Flex 4

  1. I am new to this and your Blog is awesome.

    I have done this and added multiple streams with different bitrates.

    But how do i switch??

    1. btw this is how i added them and it works perfectly

      //setting up dynamicstreamingvideosource
      videoStreamSource = new DynamicStreamingVideoSource(); = ‘rtmp://’;

      var videoStreamItem1:DynamicStreamingVideoItem = new DynamicStreamingVideoItem();
      var videoStreamItem2:DynamicStreamingVideoItem = new DynamicStreamingVideoItem();
      //setting up video stream items
      var dynVector:Vector. = new Vector.();
      videoStreamSource.streamItems = dynVector;
      videoPlayer.source = videoStreamSource;

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