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@@ -22,3 +22,9 @@ ffmpeg -i ./testdata/test.wav \
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-frames:v 1 ./testdata/test_green.png
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```
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+
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+This can be useful for some audio service (website or application) to get waveform image from audio file. For example for playback progress bar, [soundcloud.com](https://soundcloud.com) is the best example.
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+
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+## Useful links
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+[soundcloud.com](https://soundcloud.com)
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+[Waveform – FFmpeg](https://trac.ffmpeg.org/wiki/Waveform)
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