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Re: [GMG-Devel] HTML5 Visualizer

From: Joar Wandborg
Subject: Re: [GMG-Devel] HTML5 Visualizer
Date: Wed, 2 May 2012 02:04:03 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

Hell Rich,

first off, we do not use any functionality from SoundCloud, but I will take it
as a compliment that you thought so :)

To generate the thumbnails we rely on
which is a script originally authored by a Bram de Jong. I found the script
in the source code of and built an audio thumbnailer around

A refractor/rewrite of the audioprocessing code has been initiated, but
other things have come to be prioritized over it. I have some work done in a
local branch which I may share if requested.

As for the link
( it
only works in Chrome and not in Firefox Nightly 15.0a1 (2012-04-25) nor
Iceweasel 11, the problem seems to be the webkitAudioContext not being

I like the philosophy of rendering it client-side and I have been looking
into generating the spectrogram client-side although I found the main
obstacle to be that not all browsers provide an API method to access the
raw audio data. Thus I resorted to server-side processing.


On Tue, May 01, 2012 at 04:31:19PM -0700, Rich Jones wrote:
> Oh, and you can try it out here:
> It only worked 100% in Chrome last time I tried it, but I think it might
> work in the most recent FF.
> R
> On Tue, May 1, 2012 at 4:29 PM, Rich Jones <address@hidden> wrote:
> > Saw in the screenshots of the new release you're using Soundcloud to
> > visualize your tracks.
> >
> > If you're interested, I've got a pure-JS client-solution solution that may
> > suite your needs better (and provide a more Free alternative)
> >
> > Check it out:
> >
> > -R
> >

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