Question

Get length of wav file in coldfusion

Asked by: PhillipsWellness

What is the best (easiest) way to get the length of a wav file.  I don't want the
file size, I can get that with CFDIRECTORY.  I want the length of the audio in
time.  

I found a tax called cfx_audioinf on HOF, but it doesn't work.  I mean, it returns info about the file, but the 'seconds' info is always 0, and i know the .wav files have some length to them (as I can play them in WM player with no problem).  

I'd like to avoid having to install a CFX if at all possible, but if there is another one that will work, that's fine.  Please let me know.

And yes, the file is located on the server.

Dave

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Asked On
2008-06-01 at 18:26:22ID23448696
Topics

ColdFusion Application Server

,

Cold Fusion Markup Language

,

Audio Editing

Participating Experts
1
Points
50
Comments
3

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Answers

 

by: pigmentartsPosted on 2008-06-02 at 14:24:48ID: 21695793

i dont think this can be done in CF (experts correct me if i am wrong) however you could try JAVA to examine wav files.

 

by: PhillipsWellnessPosted on 2008-06-02 at 15:09:35ID: 21696114

Java would work - I can access and create java objects through coldfusion, but I need to know specifics, like what classes to instantiate and so on.  

I'm bumping my points up to everything I have!

Thanks!

Dave

 

by: PhillipsWellnessPosted on 2008-06-02 at 16:35:45ID: 21696663

I found my own solution:

<cfscript>
function getWaveLength(sFileName) {
	var oAudioFile = createObject("java","java.io.File").init(arguments.sFileName);
	var oAudioSystem = createObject("java","javax.sound.sampled.AudioSystem");
	var oAudioFileFormat = oAudioSystem.getAudioFileFormat(oAudioFile);
	var oAudioInputStream = oAudioSystem.getAudioInputStream(oAudioFile);
	var oAudioFormat = oAudioInputStream.getFormat();
	var nFrameLength = oAudioFileFormat.getFrameLength();
	var nFrameRate = oAudioFormat.getFrameRate();
	return round(nFrameLength / nFrameRate);
}
</cfscript>

                                              
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