What is the best way to calculate the waveform of long audio files on the server side?

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Urbansamurai2018-12-09 20:47:14

Node.js

Urbansamurai, 2018-12-09 20:47:14

The task is to decode the data and calculate the waveform. In the client application, the user can download music up to 3 hours in MP3 format. There are a bunch of examples on how to do this on the client side by fully loading the data as an ArrayBuffer and using the Web Audio API + decodeAudioData.
Question: how to do the same on the server side using streaming data decoding? Maybe another language, like Python, would be better suited for this purpose?

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Urbansamurai, 2018-12-10
@Urbansamurai

This option , combined with serverless, appears to be the solution .