Re: [rtcweb] Platforms that support H264

[Gili <[e-mail]>]

Hi Bossiel,

     Thanks for the clarification. Are there existing libraries on top 
of CUDA and Intel Quick Sync that provide real-time H.264 
encoding/decoding (with a reasonable license), or is this something we'd 
need to build ourselves?

     Also, please note that not all video cards support CUDA (only 
NVidia by last count), or run Intel CPUs (in spite of the fact that many 
do), so we still have a portability problem.

Thanks,
Gili

On 11/2/2013 2:00 PM, Bossiel wrote:
> On windows 7 you have CUDA and Intel Quick Sync
>
> Sent from my iPhone
>
> On Nov 2, 2013, at 18:41, Gili <[e-mail] 
> <mailto:[e-mail]>> 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 <[e-mail]> 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" <[e-mail] 
>>> <mailto:[e-mail]>> wrote:
>>>
>>>
>>>     On 2 Nov 2013, at 15:02, Martin Thomson
>>>     <[e-mail] <mailto:[e-mail]>> wrote:
>>>
>>>     > On 2 November 2013 07:37, cowwoc <[e-mail]
>>>     <mailto:[e-mail]>> 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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