Re: [rtcweb] Platforms that support H264

Bossiel <bossiel@yahoo.fr> Sat, 02 November 2013 18:00 UTC

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From: Bossiel <bossiel@yahoo.fr>
Date: Sat, 2 Nov 2013 19:00:51 +0100
To: Gili <cowwoc@bbs.darktech.org>
Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Platforms that support H264
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On windows 7 you have CUDA and Intel Quick Sync

Sent from my iPhone

On Nov 2, 2013, at 18:41, Gili <cowwoc@bbs.darktech.org> wrote:

> 
>     So... the only platform that supports H.264 natively (real-time encoding/decoding) is Windows 8? Any others?
> 
> Gili
> 
> On 11/2/2013 1:27 PM, Bossiel thioriguel wrote:
>> @Emil
>> Both Windows 8 and 7 natively contain H.264 *encoder* (Thanks for Media foundation). The only issue with Windows 7 is the the encoder doesn't support realtime encoding (up to 3s delay).
>> You can also rely on the GPU (Cuda for Nvidia and Intel Quick Sync for Intel). Nothing to install for the end-user.
>> If you want reference code:
>> Media Foundation (Windows OS and Intel Quick Sync): https://code.google.com/p/doubango/source/browse/#svn%2Fbranches%2F2.0%2Fdoubango%2Fplugins%2FpluginWinMF
>> Nvidia Cuda: https://code.google.com/p/doubango/source/browse/#svn%2Fbranches%2F2.0%2Fdoubango%2Fplugins%2FpluginCUDA
>> 
>> 
>> 
>> Le Samedi 2 novembre 2013 18h14, Emil Ivov <emcho@jitsi.org> a écrit :
>> Same questions for OS X and Windows actually. Last time we checked (which was also some time ago) there was no way to get the OS to *encode* H.264 for you.
>> --sent from my mobile
>> On 2 Nov 2013 17:57, "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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>> 
>> 
>> 
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