紧急求助，ffmpeg的代码的怎样写才对！！
asp的是这样写：
<%
video="abc.mp3"
video3="123.mp3"
str="ffmpeg.exe"
str=server.mappath(str)
Set WshShell = server.CreateObject("Wscript.Shell")
str=str&" -i "&server.mappath(video)&" -b 360 -ar 24000 -t 39 "&server.mappath(video2)
Isffmpeg = WshShell.Run(str,1,false)
Set WshShell = Nothing
%>
但是如果上面的代码要弄为php的话，在php得如何写啊？？？
php的ffmpeg代码要如何写~~~~~~~~~~
[解决办法]
ASP
str=str&" -i "&server.mappath(video)&" -b 360 -ar 24000 -t 39 "&server.mappath(video2)
PHP
$str .= " -i ".realpath($video). " -b 360 -ar 24000 -t 39 ". realpath($video2);
