[FFmpeg-user] GPU speed increase

[Bo Zhou]

You can get more information here.

https://developer.nvidia.com/nvidia-video-codec-sdk

NVIDIA GPU works with the GPU newer than Kepler, MX150 is too old to
support NVENC, the only way is DXVA.

NVIDIA VideoCodec only supports MPEG1/2 H.264, HEVC and VP9, also the
ffmpeg must be built with the NVENC support.

Also it only supports the color layout in NV12 means YUV420 for H264 and
HEVC and VP9.

On Sun, Nov 18, 2018 at 5:58 PM Dennis Mungai <dmngaie at gmail.com> wrote:

> A few observations:
>
> The MX150 does not support NVENC, meaning that any NVENC-based hwaccels are
> out of the window.
> However, that same laptop is most likely to have Optimus, giving you access
> to the Intel's Integrated graphics platform from which you can use either
> QSV or VAAPI for hwaccel (filters and encoders), with OpenCL also in the
> mix.
>
> However, in the command you posted, you'll see no benefit whatsoever from
> hwaccel based on the filters you're using.
>
> On Sun, Nov 18, 2018, 05:13 Joshua Grauman <jnfo-c at grauman.com wrote:
>
> > Hi all,
> >
> > I am looking at getting a new laptop and was wondering if getting a GPU
> > will increase ffmpeg speed. I am thinking of getting a laptop with a
> > Nvidia Geforce MX150 and I'm wondering if that will speed up the
> following
> > command:
> >
> > shm is a program that outputs video frames for ffmpeg to encode:
> >
> > shm | ffmpeg -f rawvideo -pixel_format bgra -video_size 1920x1080
> > -framerate 24 -i - -vcodec utvideo vid.avi
> >
> > Also, how would I figure out of the GPU would speed up the following
> > command with lots of complex filters?
> >
> > ffmpeg -y -ss 78 -i "Video1.MTS" -ss 78 -i "Video1.wav" -loop 1 -i
> > logo.png -ss 0.9 -i vidpipe -i Intro.mp4 -c:a aac -filter_complex
> > "[0:0]curves=master='0/0 0.04/0 1/1'[out1];
> > [out1]fade=t=in:st=0:n=24[out2];
> > [4:v][4:a][out2][1:0] concat=n=2:v=1:a=1[out3][aud1];
> > [2:0]fade=t=in:st=5.1:n=24[logo];
> > [out3][logo]overlay=10:main_h-overlay_h-10:format=rgb[out4];
> >
> [out4]drawtext=fontfile=Montserrat-Medium.ttf:text=Josh:fontsize=50:fontcolor=ffffff:alpha='if(lt(t,5.1),0,1)':x=210:y=(h-text_h-110),
> >
> >
> drawtext=fontfile=Montserrat-Light.ttf:text=Test:fontsize=50:fontcolor=ffffff:alpha='if(lt(t,5.1),0,1)':x=210:y=(h-text_h-45)[out5];
> >
> > [3:0]colorkey=0x000000:0.01:0.9[ovl1]; [ovl1]fade=t=in:st=5.1:n=24[ovl2];
> >
> [ovl2]drawbox=0:0:1920:44:color=0x000000ff:t=fill:replace=1:enable='gt(t,5.1)'[ovl3];
> >
> > [out5][ovl3]overlay=format=rgb:enable='gt(t,5.1)'[out6];
> >
> [out6]drawtext=fontfile=GentiumPlus-R.ttf:text=Test2:fontsize=24:fontcolor=ffffff:alpha='if(lt(t,5.1),0,1)':x=7:y=7,
> >
> >
> drawtext=fontfile=GentiumPlus-R.ttf:text=Test:fontsize=24:fontcolor=ffffff:alpha='if(lt(t,5.1),0,1)':x=(w-text_w-7):y=7[out7];
> >
> > [out7]fade=t=out:st=1128.1:n=24[out8]; aevalsrc=0:d=5[sil];
> > color=black:1920x1080:d=5[blk]; [out8]trim=duration=1129.1[trimv];
> > [aud1]atrim=duration=1129.1[trima];
> > [trimv][trima][blk][sil]concat=n=2:v=1:a=1[out9][aud2]" -strict
> > experimental -shortest -map [out9] -map [aud2] -t 1134.1 "Video1.mp4"
> >
> > Josh
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> >
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