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Re: Blob URLs for MediaStreams

From: Cullen Jennings <fluffy@iii.ca>
Date: Tue, 9 Oct 2012 09:27:48 -0700
Cc: public-media-capture@w3.org
Message-Id: <24F38C52-4D93-4EEA-B6CC-6EA3CE3232B1@iii.ca>
To: robert@ocallahan.org

On Oct 8, 2012, at 22:26 , Robert O'Callahan <robert@ocallahan.org> wrote:

> http://dev.w3.org/2011/webrtc/editor/getusermedia.html#methods-1
> The current draft says that createObjectURL mints a Blob URL for a MediaStream. I don't think that is a good idea, since Blobs are static objects (an immutable array of bytes), and MediaStreams are a constantly-changing stream of media data. So a URL constructed for a MediaStream cannot be used everywhere a Blob could be used, for example it can't be loaded via XmlHttpRequest.
> 
> So I suggest that a new URL scheme analogous to Blob URLs be defined for MediaStreams, say scheme "mediastream". The rest of their behavior, such as revocation, can be shared with Blob URLs.
> 
> Rob
> -- 
> “You have heard that it was said, ‘Love your neighbor and hate your enemy.’ But I tell you, love your enemies and pray for those who persecute you, that you may be children of your Father in heaven. ... If you love those who love you, what reward will you get? Are not even the tax collectors doing that? And if you greet only your own people, what are you doing more than others?" [Matthew 5:43-47]
> 

I agree that Blob makes no sense here. But it seems like a better thing might not be a URL scheme but instead just define the object that gets returned and out to get the data out of it. 
Received on Tuesday, 9 October 2012 16:27:31 GMT

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