W3C home > Mailing lists > Public > public-tvapi@w3.org > March 2015

Re: Playing the channel from TVTuner

From: Marco Chen <mchen@mozilla.com>
Date: Tue, 17 Mar 2015 10:43:37 +0800
Message-ID: <CAEeA-r4Q0GN1+gaXu6_pVS6ewpoaRzby=dDUKewncgthJi=v+Q@mail.gmail.com>
To: Paul Higgs <paul.higgs@ericsson.com>
Cc: "public-tvapi@w3.org" <public-tvapi@w3.org>
Hi Paul,

Please refer to [1], there is a new attribute proposed in HTMLMediaElement
and called "srcObject".
You can just assign a MediaStream object into it.

[1]
http://w3c.github.io/mediacapture-main/getusermedia.html#widl-HTMLMediaElement-srcObject

Thanks,
Sincerely yours.

On Tue, Mar 17, 2015 at 4:18 AM, Paul Higgs <paul.higgs@ericsson.com> wrote:

>  Found it myself here….
> http://w3c.github.io/mediacapture-main/#direct-assignment-to-media-elements
>
>
>
> I am not sure how seamless transitioning from live to timeshifted would be
> given that the “User Agent *MUST* re-run the media element load algorithm
> <http://www.w3.org/TR/html5/embedded-content-0.html#media-element-load-algorithm>”
> if the source for the MediaElement changes.
>
>
>
> *From:* Paul Higgs [mailto:paul.higgs@ericsson.com]
> *Sent:* Monday, March 16, 2015 4:08 PM
> *To:* public-tvapi@w3.org
> *Subject:* Playing the channel from TVTuner
>
>
>
> Hi
>
>
>
> Looking at the TV Control API specification [1] I am left wondering how
> these “connect” at an application level.
>
>
>
> I expect that we will be using an HTML5 video element [2] to present the
> tuned channel and will interact with that presentation via some “TV
> Application”
>
>
>
> As far as I can see, the TVTuner.stream  is of type MediaStream (defined
> in [3]) but the src attribute of the HTML5  <video> element is a URL. In
> MSE [4] there is a createObjectURL() defined for MediaSource, but I do not
> see anything equivalent in MediaStream.
>
>
>
> Could someone provide some sample JavaScript for connecting an HTML5
> <video> element to the TVTuner?
>
>
>
> [1] http://w3c.github.io/tvapi/spec/
>
> [2] http://www.w3.org/TR/html5/single-page.html#the-video-element
>
> [3] http://www.w3.org/TR/mediacapture-streams/
>
> [4] http://www.w3.org/TR/media-source/#methods-4
>
>
>
>
>
> [image: Description: Description: Ericsson] <http://www.ericsson.com/>
>
> *PAUL HIGGS *
> Technical Solutions Manager
> Ericsson Inc
>
>
> *Ericsson*
> 6 Concourse Parkway, suite 400
> Atlanta, GA 30328, United States of America
> Phone +1 (650) 580-1731
> paul.higgs@ericsson.com
> www.ericsson.com
>
>
>
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> <http://www.ericsson.com/current_campaign>
>
>
>
> Legal entity: Ericsson AB, registered office in Kista, Sweden. This
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>



-- 
-------------------------------------
Marco Chen
Engineering Manager
Connected Device, Firefox OS Devices
Mozilla Corporation

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Received on Tuesday, 17 March 2015 02:44:07 UTC

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