Question

I am just playing around with html5 canvas and I want to make a spectrum for sound playing. I’ve followed a couple of tutorials, but it keeps telling me that the operation is insecure. I’ve copypasted direct code from here: https://developer.mozilla.org/en-US/docs/Introducing_the_Audio_API_Extension and I know frameBuffer works because I’ve also tried the codesnippets from here: http://videos.mozilla.org/serv/blizzard/audio-slideshow/#slide2

It seemst to work perfect on this site, but when I copy the code to mine, it just does not work.

Here’s a jsfiddle (must be opened in FF 14 >):
http://jsfiddle.net/6GMVC/2/

The error I get is:

SecurityError: The operation is insecure.
var frameBuffer = event.frameBuffer;

Answer 1

Looks like a cross-domain error — there is a discussion of a similar issue here:

'Security error" code: "1000' in Audio API example