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waveforms on Linux

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waveforms on Linux

Posted by gw at 2009-05-28 12:53  

I am using ELAN 3.7.2 on Linux (Ubuntu 9.04).&nbsp; I can't seem to get any waveforms to show, though the sound plays fine. In case it's relevant, I get messages like this in the terminal when I load a WAV file:<br><br>5250.24First Position: 0, -1 Duration: 5250241<br>5250.24First Position: 0, -1 Duration: 5250241<br>New position request: 1.01<br>Seeking pos: 1010 - Real: 0<br>Performing Audio seek: -1<br>SetAudioClassic Called... Use another format!<br>5250.24First Position: 0, -1 Duration: 5250241<br>New position request: 0<br>Seeking pos: 128 - Real: 0<br>Performing Audio seek: -1<br>SetAudioClassic Called... Use another format!<br><br>There is no error message when starting to play the file, but this appears when I stop it at some point:<br><br>5250.24First Position: 0, -1 Duration: 5250241<br>New position request: 2.394<br>Seeking pos: 2394 - Real: 1394000<br>Performing Audio seek: -1<br>SetAudioClassic Called... Use another format!<br><br>Does anyone know what the problem might be? I have tried this exact file on ELAN 3.7.2 on Windows and the waveform shows up.<br>Best wishes,<br>Gareth<br>

Re: waveforms on Linux

Posted by hasloe at 2009-06-01 14:28  

The messages you see are (as far as I know) produced by JMF, the framework proucing the sound (that you can actually hear apparently).
The drawing of the waveform is done independently of the media player.

There might be information on what's going on in hte elan log file: play a file producing the messages as above and seeing no waveform. Close ELAN and navigate to the folder <home>/.elan_data. There is a file elan0.log (or elan1.log etc. look at the timestamp). Open it in a texteditor and look for the section starting with:
"Information from header of wav-file:"
Please see if there are error messages following this section and post them here.

-Han

 

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