Japanese GPU filters

[MacAddict]

I just stumbled upon the Japanese GPU filter collection today and started some testing. I'm surprised a search didn't show any other threads in the forums yet! Anyone have any feedback?

Currently testing-

GPU_Start()
GPU_LanczosResize(672,272)
GPU_End()

in hopes of gaining a bit of encoding speed.

http://www.avisynth.org/JapanesePlugins

[tsp]

It was hard to find. I think that could be a reason why it was not discussed much. Else a nice filter it even doesn't mesh up fft3dGPU (or reverse). Just be aware that it doesn't seems to handle lost device although a screensaver couldn't provoke it suspend to ram could. It evens include a wavelet denoiser. To bad it isn't functional.

[Boulder]

I checked the two resizers quickly and noticed that using them isn't worth it. On my GF 6600GT at 500MHz/1GHz, they are some 10-15% slower than the internal Avisynth resizers. GPU_Bilinear also blurs the image more than Avisynth's, Lanczos looks almost exactly the same.

[tsp]

Boulder: Is it also slower when you encode to XviD/DivX or other cpu intensive encoders

[Boulder]

Yes, I based the results on an MPEG2 encode with CCE.

[MacAddict]

After a few 2 pass XviD GPU_Lanczos encodes I have to agree with you Boulder:( The quality was there but not the speed.

[Prettz]

Are you all using AGP or PCIe video cards?

[Boulder]

I've got AGP.

[Prettz]

I ask because it was brought up in another thread on GPU filters that while motherboard->AGP transfers are lightning fast, AGP->motherboard transfers are not fast at all. PCIe supposedly achieves equal bandwidth in both directions.

[MacAddict]

Using AGP here as well. No doubt my next 64bit board will have PCIe.

[tsp]

also AGP but I don't think it matters that much. It doesn't take more than max 25 ms(about 40 FPS) to copy the frame(720x576) to texture upload it to the GPU download it again and copy it to the destination frame on my computer (athlon xp 2400 MHz,200 Mhz DDR ram,AGP 8x Geforce 6800 GT 350/325 (core/mem) MHz)