Re: [FFmpeg-user] Integration of ffmpeg with Haswell
On Mon, May 18, 2015 at 15:07:03 +, 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 ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Integration of ffmpeg with Haswell
Hello , 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 ? Thanks and Regards Shiwani Date: Mon, 18 May 2015 12:53:12 +0200 From: barsn...@gmx.net To: ffmpeg-user@ffmpeg.org Subject: Re: [FFmpeg-user] Integration of ffmpeg with Haswell On Mon, May 18, 2015 at 12:43:12 +0200, Moritz Barsnick wrote: Actually, my bad. Support is already integrated into ffmpeg. It appears that, at the presence of the Media SDK (libmfx, mfx/mfxvideo.h), the qsv encoders and decoders are built. You will need the Media SDK, and you have to build ffmpeg yourself. I failed to recognize: You need to configure your ffmpeg build with --enable-libmfx Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Integration of ffmpeg with Haswell
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: barsn...@gmx.net To: ffmpeg-user@ffmpeg.org Subject: Re: [FFmpeg-user] Integration of ffmpeg with Haswell On Mon, May 18, 2015 at 15:07:03 +, 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 ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Integration of ffmpeg with Haswell
On Mon, May 18, 2015 at 12:10:47 +0200, Moritz Barsnick wrote: If you really have the need for testing the hardware acceleration, I believe you must google your way through those paths of integrating. Otherwise, just use plain ffmpeg. Actually, my bad. Support is already integrated into ffmpeg. It appears that, at the presence of the Media SDK (libmfx, mfx/mfxvideo.h), the qsv encoders and decoders are built. You will need the Media SDK, and you have to build ffmpeg yourself. Good luck, (I won't try it myself for the time being) Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Integration of ffmpeg with Haswell
On Mon, May 18, 2015 at 12:43:12 +0200, Moritz Barsnick wrote: Actually, my bad. Support is already integrated into ffmpeg. It appears that, at the presence of the Media SDK (libmfx, mfx/mfxvideo.h), the qsv encoders and decoders are built. You will need the Media SDK, and you have to build ffmpeg yourself. I failed to recognize: You need to configure your ffmpeg build with --enable-libmfx Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
Re: [FFmpeg-user] Integration of ffmpeg with Haswell
Hi Shiwani, On Mon, May 18, 2015 at 01:59:04 +, Shiwani Agrawal wrote: what I am not getting is the need for installing intel media SDK and then integrating ffmpeg with it . Can we install ffmpeg directly without having installed intel media SDK ?. Yes, sure you can install ffmpeg without the Intel Media SDK. ffmpeg then doesn't make use of the Intel Quick Sync hardware acceleration though. There are arguments whether that acceleration is useful though - arguments about actual speed gain, supported codec parameters, and so on. Some of these arguments may be outdated. If you really have the need for testing the hardware acceleration, I believe you must google your way through those paths of integrating. Otherwise, just use plain ffmpeg. Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user
