Flex StageVideo has audio but no video

I'm trying to use StageVideo in a Flash Builder 4.5.1 project for a view based mobile app.  I'm using the SimpleStageVideo .swc from Thibault Imbert.  I hear the audio but don't see the video.  What have I done wrong?

nc = new NetConnection();
nc.connect(null);
ns = new NetStream(nc);
ns.client = this;
simpleStageVideo = new SimpleStageVideo(320,240);
simpleStageVideo.addEventListener(Event.INIT, onInit);
simpleStageVideo.addEventListener(Event.ACTIVATE,onStatus);
simpleStageVideo.attachNetStream(ns);

var container:UIComponent = new UIComponent();
container.width = stage.stageWidth;
container.height = stage.stageHeight;
addElement( container );
container.addChild(simpleStageVideo);
ns.play(videoFile);

I'm also using -swf-version=11 in my additional compiler options.  Many posts say use 13 or 14 but I get a run time error (project terminated before connecting to debugger) when I try to start the project.  This may be the problem.  I'm using the 11.1 Flash debugger version.