Use of filters

[Harrysmiith]

I have just produced my first poor backup. The source is fairly poor- the only way I can describe it is grainy - video like as oppossed to digital. Made in 1989 - no doubt copied from a video.

I used movie only and the result was 71.1% with bitrates of 3909/3591/3732.
The original only had bite rates of 5000 or so.

I have added undot() and deen() to the avs ? and am trying again. Using CCE basic Speed is now 1.15 rather than 2.4 so it looks like something is happening.

I'm quite happy to keep messing around to try and get a better result but as the original is not very good am I simply wasting my time ? does using undot and deen make sense ? from my understaing of the Matrix options default seems as
goos as anything else

[arsmori]

With interlaced material you should only use temporal filters like FluxSmoothT. A high value like 'FluxSmoothT(9)' will soften and remove grain pretty much like the 'Undot().Deen()' combo without the mangling.

http://www.avisynth.org/warpenterprises/

[Harrysmiith]

Thanks - will give FluxSmoothT(9) a go when the current run is finished. From the readme file the default figure is 7 --- you prefer 9.
Also what do you mean by mangling ?

[arsmori]

Thanks - will give FluxSmoothT(9) a go when the current run is finished. From the readme file the default figure is 7 --- you prefer 9.
I used values between 3 and 9 with this filter. The default (7) is already pretty strong and in my experience values over 9 produce unacceptable softening. I suggested 9 for a particularly noisy source, but by all mean experiment, this is not the only temporal smoother either. I suggested FluxSmoothT because it's forgiving and give good results even if you don't know what you're doing, good all purposes smoother. Work very well on grainy traditional animation too.

Also what do you mean by mangling ?
Spatial filters tend to produce strange artifacts on interlaced material.

[Harrysmiith]

Thanks arsmori

I have now tried FluxsmoothT(9). Encoding took 167 mins compared to 254 for undot and deen. To my eyes undot and deen gave a slightly better result. will try 7 next and then 5 - what else is a computer for at night ?

[Boulder]

With interlaced material you should only use temporal filters like FluxSmoothT. A high value like 'FluxSmoothT(9)' will soften and remove grain pretty much like the 'Undot().Deen()' combo without the mangling.

http://www.avisynth.org/warpenterprises/
With interlaced sources you cannot simply apply the filter on the whole frame. A search will reveal the couple of ways to do things.