Re: [web-audio-api] OfflineAudioContext needs a way to handle audio of arbitrary duration (#21)

> [Original comment](https://www.w3.org/Bugs/Public/show_bug.cgi?id=21311#1) by Robert O'Callahan (Mozilla) on W3C Bugzilla. Sun, 17 Mar 2013 22:57:19 GMT

(In reply to [comment #1](#issuecomment-24244089))
> However, to speculate a bit, another approach for handling long renderings
> is to direct the output to a MediaStreamRecorder which will hopefully in the
> future allow extracting compressed formats as well.

The whole point of MediaStreamRecorder is to support compression so I think that'll be supported as soon as MediaStreamRecorder is implemented.

> This would allow the UA
> take care of the render/compress cycle and block sizes, and the API would
> just hand the developer a readily rendered blob to use however needed. I'm
> not quite up to date on MediaStreamRecorder though, perhaps Roc knows more
> about whether this is feasible or not.

It's feasible but we need to specify how MediaStreamRecorder and OfflineAudioContext interact since currently MediaStreams are real-time-only.

I think it's pretty important to have some mechanism whereby OfflineAudioContext can deliver data incrementally.

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