[FFmpeg-user] Integration of ffmpeg with Haswell

[Shiwani Agrawal]

Hello ,

Thanks for explanation , I would certainly test the speed enhancement for my case before paying for the license .

Thanks and Regards ,
Shiwnai

> Date: Mon, 18 May 2015 17:19:22 +0200
> From: barsnick at gmx.net
> To: ffmpeg-user at ffmpeg.org
> Subject: Re: [FFmpeg-user] Integration of ffmpeg with Haswell
> 
> On Mon, May 18, 2015 at 15:07:03 +0000, Shiwani Agrawal wrote:
> 
> > Thanks for helping me out in this issue , just want to clarify in the
> > end , does it mean that if we integrate ffmpeg with the media SDK it
> > increases the speed (or Quality) of transcoding process by processor
> > ? If yes , why ?
> 
> The process is called "hardware acceleration". See here:
> https://trac.ffmpeg.org/wiki/HWAccelIntro
> 
> It helps applications - in this case decoders, encoders, filters, and
> so on - use special hardware for certain calculations, thereby reducing
> the load on the CPU and/or increasing the speed. In your case, you are
> referring to the Intel Quick Sync hardware, which was created
> particularly for video (and audio?) coding.
> 
> Using it _should_ increase the speed of the transcoding process (note
> that speed, quality and compression size are always trade-offs), but
> doesn't always, it depends on the implementation. On the other hard,
> the hardware algorithms have certain restrictions and aren't as
> flexible as software solutions. You won't be able to adjust all
> parameters of the encoding process, and sometimes more complex profiles
> or more modern codecs aren't supported either. So it really depends on
> your use case.
> 
> And I think you need a really good justification to pay for an extra
> license for the Intel SDK. (I'm not sure a working free implementation
> exists yet.) As a normal user, I wouldn't go to the trouble of
> integrating the SDK. Just check how good ffmpeg's other support is for
> you first.
> 
> Moritz
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