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24th March 2021, 17:47 | #921 | Link | |
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bt=1 (spatial only) instead of bt=3 does not produce grid either , at least on that single still image that was looped with imagesource Last edited by poisondeathray; 24th March 2021 at 17:51. |
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3rd May 2021, 09:56 | #922 | Link | ||
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18th September 2021, 12:17 | #923 | Link |
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Is there a way to match FFT3DGPU to fft3dfilter? The following calls give me very different results FFT3DGPU being worse with blurrier lines and also some halo. precision=0 is ok if the pipeline is in HBD.
Code:
fft3dfilter(sigma=16,sigma2=6,sigma3=1,sigma4=0,bw=12,bh=12,ow=6,oh=6,bt=4,plane=4,ncpu=4) FFT3DGPU(sigma=16,sigma2=6,sigma3=1,sigma4=0,bw=12,bh=12,ow=6,oh=6,bt=4,plane=4,precision=0)
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18th September 2021, 14:39 | #924 | Link |
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Doggy, methinks that FFT3dFilter and the gpu version will often if not always give differing results, I seem to remember that
one good reason not to use gpu version was thats it uses less precision, and maybe truncation rather than rounding. Although visible blurring and halo does sound disturbing.
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18th September 2021, 14:58 | #925 | Link |
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Less precision means that in 8 bits the default precision is using only 16 bit floating point type (half). At least for part of the algorithm. I suppose this was chosen because of speed reasons. For 10+ bits I made it using 32 bit float always as I remember. See docs.
I cannot tell you about other comparisons, I never used the plugin. I guess fft3dgpu was based on an earlier version of fft3dfilter but I don't know when this happened. |
18th September 2021, 18:41 | #926 | Link | ||
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Does changing the values of bw,bh,ow,oh to a power of 2 change anything?
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v1.8.5 - 2005/12/04 - fixed bug with memory leakage (thanks to tsp). v1.9.0 - 2006/04/25 - added dehalo options; corrected sharpen mode; - re-enabled SSE optimization for degrid=0; - added SSE optimization for bt=3,-1 with degrid>0 (faster by 15%) v1.9.1 - 2006/05/10 - added SSE optimization for bt=4 with degrid>0 (faster by 30%). v1.9.2 - 2006/09/11 - changed default bw=bh=32; added mode bt=5 v2.0.0 - 2006/11/29 - added experimental internal motion compensation mode; - window reorganized; internal multithread support v2.1.0 - 2007/01/17 - removed (temporary ?) experimental internal motion compensation mode. v2.1.1 - 2007/02/20 - fixed bug with bw not mod 4 (restored v1.9.2 method). Last edited by Reel.Deel; 18th September 2021 at 18:52. Reason: typo |
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18th September 2021, 21:48 | #927 | Link |
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Thanks Reel.Deel, has some time to check what's going on.
So power of 2 only, 4, 8, 16... that leaves out 12. Code:
FFT3DGPU(sigma=16,sigma2=6,sigma3=1,sigma4=0,bw=16,bh=16,ow=8,oh=8,bt=4,plane=0,precision=0) fft3dfilter(sigma=16,sigma2=6,sigma3=1,sigma4=0,bw=16,bh=16,ow=8,oh=8,bt=4,plane=0,ncpu=2) This one though isn't: Code:
FFT3DGPU(sigma=16,sigma2=6,sigma3=1,sigma4=0,bw=8,bh=8,ow=4,oh=4,bt=2,plane=0,precision=0) fft3dfilter(sigma=16,sigma2=6,sigma3=1,sigma4=0,bw=8,bh=8,ow=4,oh=4,bt=2,plane=0,ncpu=2) Code:
FFT3DGPU(sigma=16,sigma2=6,sigma3=1,sigma4=0,bw=16,bh=16,ow=6,oh=6,bt=2,plane=0,precision=0) Code:
FFT3DGPU(sigma=16,sigma2=6,sigma3=1,sigma4=0,bw=12,bh=12,ow=4,oh=4,bt=2,plane=0,precision=0) FFT3DGPU
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3rd May 2022, 02:42 | #928 | Link |
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I'm a bit at a loss for how to install and use FFT3dGPU. Does it replace FFT3d entirely? Does it only work with some plugins?
I'm looking to speed up my workflow in any way possible, can someone please direct me to a good guide/resource for using and installing FFT3dGPU? Thanks!! |
3rd May 2022, 03:24 | #929 | Link | |
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6th May 2023, 21:37 | #930 | Link |
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The bug happened several times. At first, encoding with the FFT3DGPU filter proceeds normally. Then the encoding time starts to increase, from several seconds to several minutes. This problem has been around for about 2 months. This may be due to a video driver update. Has anyone had the same problem? And what could be its reason?
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