Попробуйте, заменив video_instance на имя экземпляра вашего видео.
var features:Array = [
"playButton",
"pauseButton",
"playPauseButton",
"stopButton",
"muteButton",
"backButton",
"forwardButton",
"volumeBar",
"seekBar",
"bufferingBar",
"fullScreenButton"
];
function setSkinVisible(player:FLVPlayback, bool:Boolean=true):void
{
var i:String;
for each(i in features)
{
var t:Sprite = player[i];
if(t != null)
t.visible = bool;
}
}
// test
addEventListener(Event.ENTER_FRAME, _handle);
function _handle(e:Event):void
{
setSkinVisible(video_instance, !video_instance.playing);
}