Here you can see one of our streams coming from the same Flash Media Server instance as the sluggish one from above: http://www.cecentral.com/tmp/osmf.html
Here is how I instantiate MediaPlayerSprite and VideoElement:
// Setup Media Player Component
mps = new MediaPlayerSprite();
mps.mediaPlayer.volume = SettingsUtil.getInstance().globalVolume;
mps.mediaPlayer.bufferTime = 3;
mps.mediaPlayer.currentTimeUpdateInterval = 100;
var webcastVO = WebcastManager.getInstance().webcast;
var dsr:DynamicStreamingResource = new DynamicStreamingResource(webcastVO.network.rtmpCDN);
for (var i:int = 0; i < videoVO.sources.length; i++) {
var theSource:VideoSourceVO = videoVO.sources[i];
trace(theSource.file);
dsr.streamItems.push(new DynamicStreamingItem(theSource.file, theSource.bitrate, theSource.width, theSource.height));
}
dsr.initialIndex = videoVO.preferredIndex;
var videoElement:VideoElement = new VideoElement();
videoElement.resource = dsr;
mps.media = videoElement;
// .... //
// Media Player Signals
new NativeSignal( mps.mediaPlayer
, MediaPlayerStateChangeEvent.MEDIA_PLAYER_STATE_CHANGE
, MediaPlayerStateChangeEvent).add(onPlayStateChange);
When a video is streaming, and the playhead is dropped in another position, the lag occurs AFTER receiving state change of "playing" from mps.mediaPlayer:
VideoPlayer::onPlayStateChange() buffering // video added to stage
VideoPlayer::onPlayStateChange() playing // video playing
VideoPlayer::onPlayStateChange() buffering // playhead moved / seek
VideoPlayer::onPlayStateChange() playing // this occurs, and loading animation is removed from VideoElement
// 1 - 5 seconds pass, then video resumes playback
