Question

我正在使用greensock LoaderMax来加载视频文件和声音文件。我复制了尽可能多的代码。视频（s9）正在播放，并且通过视频以一定比例播放，我需要播放另一种声音。

if(s9.playProgress > .1) // This is what I can't get to work
{
    s12_sound.playSound(); //This sound won't play at .1 playProgress
}

s9.content.visible = true;

s9.playVideo();

stop();

s9.addEventListener(VideoLoader.VIDEO_COMPLETE, play_s9_loop); //This plays a video once s9 is done.

function play_s9_loop(event:Event):void
{
    s9.content.visible = false;
    s9_loop.content.visible = true;
    s9_loop.playVideo();
}

我猜你不能在playProgress上做一个if（）？此外，我在AS3吮吸。

Answer 1

您应该能够只监听视频上的INIT事件（这通常意味着它已经足够加载以确定视频的持续时间），然后添加AS提示点。

//...after you create your VideoLoader...
myVideoLoader.addEventListener(LoaderEvent.INIT, initHandler);
myVideoLoader.load();
function initHandler(event:LoaderEvent):void {
    myVideoLoader.addASCuePoint( myVideoLoader.duration * 0.1, "myLabel" );
    myVideoLoader.addEventListener(VideoLoader.VIDEO_CUE_POINT, cuePointHandler);
}
function cuePointHandler(event:LoaderEvent):void {
    trace("Hit the cue point " + event.data.name);
    s12_sound.playSound();
}

还要确保预先加载s12_sound，以便在需要时可以播放。否则，您可以随心所欲地调用playSound（）并且它不会发生：）

Answer 2

我之前没有使用过这个课程，但在阅读完文档之后，看起来你可以这样做： http://www.greensock.com/as/docs/tween/com/greensock/loading/VideoLoader.html

var mid:Number = s9_loop.duration/2; //get the midpoint using the duration property
s9_loop.addASCuePoint(mid, "middle") //using addASCubePoint to add a cuepoint to the midpoint of the video
s9_loop.addEventListener(VideoLoader.VIDEO_CUE_POINT, handleMidpoint); //listen for the cuepoint

处理程序函数内部

protected function handleMidpoint(e:Event):void{
     //play your sound
}

在某些playProgress播放声音或使用greensock播放videoTime？

2 个答案: