Re: [rtcweb] Platforms that support H264 (was: Congratuiations on the Cisco announcement - but we still prefer VP8)

"Jeremy Laurenson (jlaurens)" <jlaurens@cisco.com> Sat, 02 November 2013 17:03 UTC

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From: "Jeremy Laurenson (jlaurens)" <jlaurens@cisco.com>
To: tim panton <tim@phonefromhere.com>
Thread-Topic: [rtcweb] Platforms that support H264 (was: Congratuiations on the Cisco announcement - but we still prefer VP8)
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Date: Sat, 2 Nov 2013 17:03:41 +0000
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References: <CAOqqYVEER_HprgauRawO+_gGdLdMY1MUY8jrMhhi3yVDL31bFg@mail.gmail.com> <52740478.6030109@nostrum.com> <CAOJ7v-2+_4QZwc8vEtdwVDWSP-d-z+ggB0u+VM6WnA=f-k4-XA@mail.gmail.com> <BLU404-EAS261C783EDA4575EE1A7E53593F40@phx.gbl> <52750E3C.9060206@bbs.darktech.org> <CABkgnnVR9=oWVzRaRuD701tvZCtp+SO1n6c65hJELLVfB8QcOA@mail.gmail.com>, <C21C6AC2-29F8-4DFF-BB48-5E3D625DCD65@phonefromhere.com>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Platforms that support H264 (was: Congratuiations on the Cisco announcement - but we still prefer VP8)
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You are right, it's not possible to get hardware accelerated

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> On Nov 2, 2013, at 12:57 PM, "tim panton" <tim@phonefromhere.com> wrote:
> 
> 
>> On 2 Nov 2013, at 15:02, Martin Thomson <martin.thomson@gmail.com> wrote:
>> 
>>> On 2 November 2013 07:37, cowwoc <cowwoc@bbs.darktech.org> wrote:
>>>   I can't think of a single platform that supports real-time H.264
>>> encoding/decoding natively today.
>> 
>> That's a very strange way to put the question.
>> 
>> Let me put another spin on it, and please excuse the example...
>> 
>> Skype runs on more platforms than you might think.  Those platforms
>> can all support H.264 to the extent that Skype requires.
> 
> Martin, can I ask you to talk with your Skype engineering team and check up on 
> the exact way that works on iOS. Last time I looked, it seemed you couldn’t use the 
> Apple supplied (hardware accelerated) h264 library for realtime encode/decode and
> it wasn’t at all clear to me that the hardware encoder licence covered any soft implementation of h264 we
> added.
> 
> I’d like to caveat that:
> 1) it was a while ago. 2) I’m not a lawyer. 3) it was a thought experiment.
> So it would be interesting to get a current view from the trenches.
> 
> T.
> 
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