Question

我试图用AS3显示FLV电影的持续时间。我一直收到元数据错误。代码如下。感谢。

    stop();


// Video setup -----------------------------------------------/
var nc:NetConnection = new NetConnection();
nc.connect(null);

var ns:NetStream = new NetStream(nc);
ns.addEventListener(NetStatusEvent.NET_STATUS, onStatus);
ns.client = this;
video.attachNetStream(ns);

function onStatus(e:Object):void
{
    if(e.info.code == "NetStream.Play.Start" ||
       e.info.code == "NetStream.Buffer.Full") empty.visible = false;   

    else if(e.info.code == "NetStream.Buffer.Empty") empty.visible = true;

    else if(e.info.code == "NetStream.Play.Stop") ns.seek(0);   
}

// Get duration ---------------------------------------------/

var dur:Number;
var duration:Number;

function onMetaData(meta:Object)
{
    dur = meta.duration;
}

// Play the video -------------------------------------------/
ns.play("http://adobe.edgeboss.net/download/adobe/adobetv/flasher_magazine/issue_1/issue1.mp4");

// Progress bar ---------------------------------------------/
addEventListener(Event.ENTER_FRAME, loop);

thebar.progress.scaleX = 0;

function loop(e:Event):void
{
    thebar.loaded.scaleX = ns.bytesLoaded / ns.bytesTotal;
    if(dur)
    {
        thebar.progress.scaleX = ns.time / dur;
    }

}

thebar.loaded.addEventListener(MouseEvent.CLICK, seekTo);


thebar.loaded.buttonMode = true;
thebar.progress.mouseEnabled = false;

function seekTo(e:Event):void
{
    ns.seek((thebar.track.mouseX/thebar.track.width) * dur);
}


// play/pause control ---------------------------------------------/
playPause.buttonMode = true;
playPause.addEventListener(MouseEvent.CLICK, playPauseClick);
playPause.addEventListener(MouseEvent.ROLL_OVER, playPauseOver);
playPause.addEventListener(MouseEvent.ROLL_OUT, playPauseOut);

function playPauseClick(e:MouseEvent):void
{
    var c:MovieClip = playPause;
    if(c.currentFrame == 10)
    {
        c.gotoAndStop(30);
        ns.pause();
    }
    else if(c.currentFrame == 30)
    {
        c.gotoAndStop(10);
        ns.resume();
    }
}

function playPauseOver(e:MouseEvent):void
{
    var c:MovieClip = playPause;
    if(c.currentFrame == 1)
    {
        c.gotoAndStop(10);
    }
    else if(c.currentFrame == 20)
    {
        c.gotoAndStop(30);
    }
}

function playPauseOut(e:MouseEvent):void
{
    var c:MovieClip = playPause;
    if(c.currentFrame == 10)
    {
        c.gotoAndStop(1);
    }
    else if(c.currentFrame == 30)
    {
        c.gotoAndStop(20);
    }
}

// Timer -----------------------------------------------/

var time_interval:Number = setInterval(checkTime, 500, ns);
function checkTime(myVideo_ns:NetStream) {
var ns_seconds:Number = myVideo_ns.time;
var minutes:Number = Math.floor(ns_seconds/60);
var seconds = Math.floor(ns_seconds%60)
if (seconds<10) {
seconds = ("0"+seconds);
}
time_txt.text = minutes+":"+seconds;
}; 

//non working duration code
ns.onMetaData = function(metadata) {
    duration = metadata.duration;
    var dur_seconds:Number = duration;
    var minutes_dspl = Math.floor(dur_seconds/60);
    var seconds_dspl = Math.floor(dur_seconds%60);
    if (minutes_dspl<10) {
        minutes_dspl = ("0"+minutes_dspl);
    }
    if (seconds_dspl<10) {
        seconds_dspl = ("0"+seconds_dspl);
    }
    duration_txt.text = minutes_dspl+":"+seconds_dspl;
};

Answer 1

您已将netStream客户端指定为 this ，因此您还需要将onMetaData方法添加到 this 。

将//非工作时间代码更改为

function onMetaData(metadata:Object) {
    duration = metadata.duration;
    var dur_seconds:Number = duration;
    var minutes_dspl = Math.floor(dur_seconds/60);
    var seconds_dspl = Math.floor(dur_seconds%60);
    if (minutes_dspl<10) {
        minutes_dspl = ("0"+minutes_dspl);
    }
    if (seconds_dspl<10) {
        seconds_dspl = ("0"+seconds_dspl);
    }
    duration_txt.text = minutes_dspl+":"+seconds_dspl;
};

并删除以前的onMetaData函数

Answer 2

您没有发布错误，但我认为错误是由于您对视频的编码造成的元数据必须在视频的标题中进行编码

使用AS3显示FLV的持续时间

2 个答案: