[文件操作] [已解决]如何获取指定文件夹下全部MP3文件的播放时长的总和

//&cls&dir /b *.mp3|cscript -nologo -e:jscript "%~f0"&pause&exit

function addZero(n){return n<10?'0'+n:n}

function formatSum(t){
    var r = t.split('.');
    r[1]=r[1]?r[1]:'0'
    var hour = parseInt(r[0]/3600);
    var minute = parseInt((r[0]-hour*3600)/60);
    var second = parseInt((r[0]-hour*3600)%60);
    return addZero(hour)+':'+addZero(minute)+':'+addZero(second)+'.'+r[1]
}

var s=0, wo = new ActiveXObject('WMPlayer.OCX');
while (!WScript.StdIn.AtEndOfStream){
    var f = WScript.StdIn.ReadLine();
    var t = wo.newMedia(f).GetItemInfo("Duration");
    //WScript.StdOut.WriteLine(f+'|'+t);
    s = Number((s+parseFloat(t)).toFixed(3));
}
WScript.StdOut.WriteLine(formatSum(s.toString()));
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@echo off&setlocal enabledelayedexpansion
::***************************
REM 设置阈值
set Thrs=6000000
REM 设置主流码率
set pop=128   ^kbps
REM 设置加权码率
set weig=256  ^kbps
::***************************
for %%a in (*.mp3) do (
	set size=%%~za
	if !size! gtr !Thrs! (set bps=!weig!) else (set bps=!pop!)
	set /a sec=size/bps*8/1024+sec
)
set /a min=sec/60
echo 总计 !sec!秒
echo 约合 !min!分钟
pause>nul
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@echo off
setlocal enabledelayedexpansion
for /f "tokens=8" %%i in ('tag E:\音乐\*.mp3 2^>^&1^|findstr /b "Details:"')do (
    set "t=%%i"
    set /a "s+=(1!t::=-100)*60+1!-100"
)
set /a hh=s/3600+100, mm=s%%3600/60+100, ss=s%%60+100
echo !hh:~1!:!mm:~1!:!ss:~1!
pause
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