Volume Control for Embedded Video Objects

programming flash
1

I have a video streaming application that uses a Red5 server. The stream from Red5 is represented through an embedded video object on stage. I need to be able to control the volume of this video object, but so far I’ve been unsuccessful despite following tutorials like this one: http://livedocs.adobe.com/flash/mx2004/main_7_2/wwhelp/wwhimpl/common/html/wwhelp.htm?context=Flash_MX_2004&file=00001486.html.

Here’s the relevant code:

function connect():Boolean {
    this.nc = new NetConnection();
    this.nc.onStatus = Delegate.create(this, this.ncOnStatus);

    var connected:Boolean = this.nc.connect(streamAddress);
    tt("connected?",connected);

    return connected;
}

function initNetStream() {
    this.ns = new NetStream(this.nc);
}

function playMovie(what) {
    stopVideo();
    initNetStream();
    
    ns.setBufferTime(5);
    this.videoContainer.attachVideo(this.ns);
    ns.play(what);
    _root.createEmptyMovieClip("vSound",_root.getNextHighestDepth());
    vSound.attachAudio(this.ns);

    var videoSound:Sound = new Sound(vSound);
    trace(videoSound.getVolume());
}

function volumeChange() {
    volumeFactor++;
    if(volumeFactor >= 4) {
        volumeFactor = 0;
    }
    
    videoSound.setVolume(33.3 * volumeFactor);
}

I have a button calling volumeChange onRelease, but when I trace videoSound.getVolume() in volumeChange, it comes up as undefined. However, if I trace videoSound.getVolume() after I define videoSound, it comes up as 100, but any attempt to use videoSound.setVolume in initNetStream is futile.

Thank you for reading this. I look forward to your suggestions.