Using avisynth instead of virtualdub?

[capman21]

I have always used virtualdub and loved it, but the last few days I have been editing some minidv files and it is taking forever. I am editing a 250 mb file with these settings...Smart Deinterlace, resize, and MSU Denoiser. It is taking me close to 3 hours to do this. Yeah I know I have a slow computer. Would using avisynth be faster? I know you need and I have some basic programming knowledge to help with avisynth. I always use these settings in virtualdub...Smart Deinterlace, resize(680x480), and MSU Denoiser set on careful at 5 and 30. I compress to xvid, I make small clips to keep on pc. What would did the scripting look like in avisynth for this?

[manono]

Hi-

Would using avisynth be faster?

Yes, much. Especially if no colorspace conversions are involved, and if you use AviSynth filters for the job. There is no AviSynth equivalent to the MSUDenoiser, although there are a lot of other denoisers. And there are better and much faster deinterlacers than Smart Deinterlace. A typical script might go:

LoadPlugin("C:\Path\To\LeakKernelDeint.dll")
LoadPlugin("C:\Path\To\RemoveGrain.dll")
AVISource("C:\Path\To\Video.avi)
LeakKernelDeint(Order=1)#if TFF, Order=0 if BFF
LanczosResize(640,480)
RemoveGrain()#stronger settings are available
ConvertToYV12()#unless already YV12

And set VDub for Fast Recompress, rather than the Full Processing you've been using, set up XviD for encoding, and watch how much faster it is. The 2 filters mentioned are found here:

http://avisynth.org/warpenterprises/

There are many other deinterlacers and denoisers available. And read up on AviSynth here:

http://avisynth.org/mediawiki/Main_Page

[capman21]

Well if avisynth filters can give me the same quality as the ones I use with virtualdub I have to learn to use it, because this is crazy how long its taking me. You said there was no equivalent for MSU Denoiser, but are there other denoiser filters for avisynth that are just as good?

[guns1inger]

Good noise removal is slow, no matter how you do it. Avisynth has many very good noise removal filters - Convolution3D, PeachSmoother, VagueDenoiser and more. Depending on how much filtering they have to do, 3 hours might seem short. I have filtered 2 hour VHS videos that have taken 11 - 12 hours to complete, and only being encoded to lossless formats. These still had to then be encoded for DVD.

[manono]

...but are there other denoiser filters for avisynth that are just as good?

I've never used the MSU Denoiser, so I don't know the answer. I mentioned RemoveGrain because it's a good pure temporal denoiser with many settings for stronger or weaker denoising. And it's very fast. TemporalCleaner is also very good and very fast. When I think of denoising, I think of temporal filters, whereas to me a spatial filter is a smoother. Some, such as Convolution3D and the MSU Denoiser, do both.

You can actually use the MSU Denoiser in an AviSynth script, but you'll lose some of the encoding speed benefit.

[capman21]

When I do use MSU Denoiser over half the time I use the settings Temporal set at 30 and Spatial set at 2 so my noise reducing is never really a lot. BTW, is there a difference in quality when you use fast compress compared to Full processing mode?