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Re: [rtcweb] TCP vs UDP for media

From: Cullen Jennings <fluffy@iii.ca>
Date: Thu, 31 May 2012 09:01:42 -0600
Cc: rtcweb@ietf.org
Message-Id: <E37AE3A9-2C5B-415F-BB37-D95488BF46BD@iii.ca>
To: Milan Young <Milan.Young@nuance.com>, public-media-capture@w3.org

You should take this as a requirement to the public-media-capture@w3.org list (added to thread). It seem reasonable to want to specify which codec the data returned from getusermedia should use. 

On May 16, 2012, at 12:43 AM, Magnus Westerlund wrote:

> On 2012-05-16 03:37, Young, Milan wrote:
>> Yes, existing web technologies for transport would work fine.  In
>> fact I wrote a demo based on WebSockets, the AudioAPI, and
>> getUserMedia.  But it's a bit cludgy and only transmits PCM audio.
>> 
>> Would my use case for live access to an encoded media stream be a
>> good fit for a revised MediaStreamRecorder?  Would this group the
>> right place to host such an effort?
> 
> I think this is something you should take to the W3C. As it appear to be
> primarily an API question. Getting access to the content in the JS
> application or request the browser to record to a local file which later
> can be uploaded it would not be in this WG.
> 
> Cheers
> 
> Magnus Westerlund
> WG chair
> 
>> 
>> Thanks
>> 
>> -----Original Message----- From: Eric Rescorla [mailto:ekr@rtfm.com]
>> Sent: Tuesday, May 15, 2012 4:47 PM To: Ralph Giles Cc: Young,
>> Milan; rtcweb@ietf.org Subject: Re: [rtcweb] TCP vs UDP for media
>> 
>> On Tue, May 15, 2012 at 4:38 PM, Ralph Giles <giles@thaumas.net>
>> wrote:
>>> On 12-05-15 4:22 PM, Young, Milan wrote:
>>> 
>>>> I'm wondering if any thought has been given to TCP as a media
>>>> transport.
>>> 
>>> Where low latency transmission isn't an issue, one can generally
>>> fall back to established TCP-based protocols, like HTTP streaming
>>> and websockets, so we haven't really worried about that angle in
>>> the context of webrtc.
>>> 
>>> Recording the stream is a requirement, so probably something could
>>> be built using that, merging recordings from each endpoint to fix
>>> up any dropped packets.
>> 
>> Agreed. This seems like something that could be done using just 
>> getUserMedia() plus existing Web technologies.
>> 
>> -Ekr _______________________________________________ rtcweb mailing
>> list rtcweb@ietf.org https://www.ietf.org/mailman/listinfo/rtcweb
>> 
> 
> 
> -- 
> 
> Magnus Westerlund
> 
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> _______________________________________________
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Received on Thursday, 31 May 2012 15:02:16 GMT

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