;使用方法 s := silenceDetect("test.wav",30) ;检测test.wav中响度低于-30db的静音区 ;返回数组,单个值包含键值:start开始时间,end结束时间, duration:时长 silenceDetect(file,db := 40){ out_file := A_ScriptDir "\tmp\" GUID() ".wav" ;注意脚本目录下要有tmp文件夹 ret := cmd("""" A_ScriptDir "\tools\ffmpeg64.exe"" -i """ file """ -af silencedetect=n=-" db "dB:d=1 -y """ out_file """","UTF-8") s := [] l := StrSplit(ret,"`r","`n") for k,v in l { if RegExMatch(v,"\[silencedetect[^\]]*\]\ssilence_start:\s([0-9\.]*)",m) s.push({"start":floor(m1*1000)}) else if RegExMatch(v,"\[silencedetect[^\]]*\]\ssilence_end:\s([0-9\.]*)\s\|\ssilence_duration:\s([0-9\.]*)",m) s[s.maxindex()].end := floor(m1*1000), s[s.maxindex()].duration := floor(m2*1000) } FileDelete % out_file return s } GUID(){ shellobj := ComObjCreate("Scriptlet.TypeLib") ret := shellobj.GUID uuid := RegExReplace(ret,"(\{|\}|-)","") return uuid }
info := audioinfo("test.mp3") msgbox, 64, Notice, % "The File duration is " info.duration "!" audioinfo(file){ ret := cmd(A_ScriptDir "\tools\ffmpeg64.exe -i """ file """") ;32位请去掉64 if RegExMatch(ret, "Audio:\s*([^\s]+)\s*\(*[^\)]*\)*,\s*(\d+)\s*Hz,\s*([^,]+),\s*([^,]+),\s*([^,]+)\skb/s", match) { RegExMatch(ret,"Duration:(\s*[^,]+),",dur) return {"code":match1,"samRate":match2,"tract":match3,"dep":match4,"bitRate":match5,"duration":dur1} } }
time2msc(time){ ;e.g. 01:01:22.342 a := StrSplit(time,".") b := StrSplit(a.1,":") f := "0." a.2 return floor(b.1*1000*60*60+b.2*1000*60+b.3*1000+f*1000) } msc2time(msc){ return Format("{1:02d}", floor(msc/1000/60/60)) ":" Format("{1:02d}", Mod(floor(msc/1000/60),60)) ":" Format("{1:02d}", Mod(floor(msc/1000),60)) "." Format("{1:03d}", Mod(msc,1000)) }
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