I don't know if this will help you at all, but I spent some time a while ago trying to play .FLV files in Laszlo. Basically, I created a movie object called theVideo in my SWF and when I load the swf in Laszlo I access theVideo to attach a NetStream to it. I was also playing around with connecting a web cam, which explains the commented line with the Camera.get().
<canvas debug="true">
<button name="test_button" onclick="captureFrame(myDisplay.mc.theVideo.width, myDisplay.mc.theVideo.height);" text="Capture Frame">
<method args="awidth,aheight" name="captureFrame"><![CDATA[
var snapshot = new flash.display.BitmapData(awidth, aheight, false, 0x00ffff);
var output_vid = myDisplay.mc.theVideo;
snapshot.draw(output_vid, new flash.geom.Matrix());
var frameCapture_mc = frameCapture.getMCRef();
frameCapture_mc.createEmptyMovieClip("bitmap_mc", frameCapture_mc.getNextHighestDepth());
frameCapture_mc.bitmap_mc.attachBitmap(snapshot, 1);
frameCapture_mc.bitmap_mc.x = 10;
/* _root.createEmptyMovieClip("bitmap_mc", _root.getNextHighestDepth());
bitmap_mc.x = 300;
bitmap_mc.y = 50;
bitmap_mc.attachBitmap(snapshot, 1);
Debug.write(bitmap_mc);
*/
]]>
</method>
</button>
<view bgcolor="red" height="200" name="frameCapture" stretches="both" width="200" x="300" y="50">
<method event="oninit">
setSource('goal.swf');
</method>
</view>
<view height="200" name="myDisplay" stretches="both" width="200" x="50" y="50">
<attribute name="nc" value="null"></attribute>
<attribute name="ns" value="null"></attribute>
<attribute name="mc" value="null"></attribute>
<attribute name="intervalID" type="number" value="0"></attribute>
<method event="oninit">
setSource('streamContainer.swf');
</method>
<method args="infoObject" name="onStatus"><![CDATA[
Debug.write("NetStream.onStatus called: ("+getTimer()+" ms)");
for (var prop in infoObject) {
Debug.write("\t"+prop+":\t"+infoObject[prop]);
}
Debug.write('');
if ( infoObject.code == 'NetStream.Play.Stop' ) {
clearInterval(myDisplay.intervalID);
}
]]>
</method>
<method name="executeCallback">
parent.timeLabel.setText('Time:' + this.ns.time);
Debug.write('hello');
</method>
<method event="onload" name="handleLoad"><![CDATA[
Debug.write('onload');
this.nc = new NetConnection();
this.nc.connect(null);
this.ns = new NetStream(nc);
this.ns.onStatus = this.onStatus;
this.intervalID = setInterval(this, 'executeCallback', 500);
Debug.write(this.intervalID);
this.mc = getMCRef();
this.mc.theVideo.attachVideo(this.ns);
//mc.theVideo.attachVideo(Camera.get());
this.mc.theVideo.smoothing = true;
this.ns.play("tbot_high.flv");
]]>
</method>
</view>
<text name="timeLabel" x="50" y="${parent.myDisplay.y + parent.myDisplay.height + 10}">
</text>
</canvas>
There is some code in there to take a snapshot of a frame during playback as well.