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Re: Media Source draft proposal

From: Robert O'Callahan <robert@ocallahan.org>
Date: Wed, 18 Apr 2012 15:57:34 +1200
Message-ID: <CAOp6jLZLuoP6pAsH-S7dpgFUtCHs0EGOH48JAmiyeksZRvVBnQ@mail.gmail.com>
To: Aaron Colwell <acolwell@google.com>
Cc: public-html@w3.org, Adrian Bateman <adrianba@microsoft.com>, Mark Watson <watsonm@netflix.com>
On Tue, Apr 17, 2012 at 8:13 AM, Aaron Colwell <acolwell@google.com> wrote:

> We have uploaded the draft "Media Source" proposal here:One model proposes
> to allow "script to explicitly send the media segments. The manifest
>
> http://dvcs.w3.org/hg/html-media/raw-file/tip/media-source/media-source.html
>
> This document is intended to be a starting point for discussion. We have
> highlighted
> several open issues in the document and there are no doubt other issues.
> The goal of the
> extension specification is to provide additional functionality to HTML5
> media elements
> so that web pages can programmatically feed data into different media
> tracks. One use
> of this feature is to support the adaptive streaming scenario outlined by
> the interest
> group but it isn't the only one. Other scenarios include offline video
> editing (media
> could be read with File API and local processing done on source data),
> seamless playlists,
> and fast "TV-like" channel switching (you don’t need to resend init
> segments on changes).
>

It looks pretty good to me.

For use cases where you just want to assemble a playlist and don't need to
carefully manage data buffers at the application level, I think a higher
level API that lets you precisely schedule playback is a lot simpler for
authors. See the examples at
http://people.mozilla.org/~roc/stream-demos/for example.

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]
Received on Wednesday, 18 April 2012 03:58:06 UTC

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