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exportImage() returns no data (empty base64)

See original GitHub issue

Hi @katspaugh

From the new version-3.0.0 I faced the problem, which is wave surfer, ready returns empty base64 when am using export image function.

I debugged your js, you called the fireEvent ready after draw buffer() function, Once the ready event triggers then only the draw buffer draws. But in version 1.2.3 this problem is not occurring, I submit my code here. if any mistake means kindly knows a solution. Thanks in advance.

 var wavesurfer = WaveSurfer.create({
        container: '#waveform',
        waveColor: '#D2EDD4',
        progressColor: '#46B54D',
        barHeight: 1.4 
    });
    
    wavesurfer.on('ready', function () {
      console.log(wavesurfer.exportImage())
    });
    
    wavesurfer.load('https://ia800508.us.archive.org/15/items/LoveThemeFromTheGodfather/02LoveThemeFromTheGodfather.mp3');

cc: @thijstriemstra

Issue Analytics

State:
Created 4 years ago
Comments:7

Top GitHub Comments

1reaction

arsh-swcommented, May 23, 2020

For me it works if I run it after a timeout.

setTimeout(function () {
              var imgSrc = wavesurfer.exportImage();
}, 800);

0reactions

ghostcommented, Oct 7, 2019

Hi @aburai

https://github.com/katspaugh/wavesurfer.js/issues/1727#issuecomment-526582445

this idea also fails.

cc - @thijstriemstra @katspaugh

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