Simple Noise Reduction Plug In

[royia]

Hello.
I wanna apply Noise Reduction on my video.
I want it to be both spatial and temporal.

It has to be simple and fast which retains edges and works hard on the Chroma noise (It's Analogue capture).

I saw MCTemporalDenoise which too slow and an overkill for me.

I'm not looking for "The Best".
Just good enough and fast.

I'd be happy to hear from your experience.

Thanks.

[Blue_MiSfit]

DeGrainMedian, with strong settings, possibly using two chained instances. It's very fast.

Try HQDN3D as well. It's also quite fast and powerful, but in my limited experience it seems more prone to "smearing" artifacts I commonly associate with badly done temporal denoising...

That was probably my fault though, for not getting the settings correct :)

If you have a half decent GPU in your computer, try fft3dgpu as well. It's quite fast (realtime for even 1080p on anything newer than a 7800gt).

Derek

[royia]

I'm afraid of the fft based algorithm as they don't preserve edges.
I'll try HQDN3D.
Any other suggestions?

Thanks.

[poisondeathray]

You can still use fft3dfilter for the chroma plane denoising , added to some other temporal filter

Temporal filters are usually slow

[royia]

For now, I'm using Cnr2 and HQDN3D.
Do you think of any combination with better results with the same performances?
Maybe something which preserves edged to some degree?

Thanks.

[poisondeathray]

I find fft3dfilter on plane=3 works better for chroma noise for most sources (adjust sigma for strength) , and cnr2

There are better filters, but slower . You decide on the tradeoff

Maybe if you posted a representative sample, someone could suggest fast and effective filters

[royia]

Ok, I'll post a minute or so.
It's uncompressed Interlaced AVI.

Which format should I encode it for someone to help?
Will MKV (x.264) be good?

Thanks.

[poisondeathray]

lossy compression will affect interpretation , and since this is a noise reduction topic it's important to be representative of the original (ie. lossless compression)

you could use lagarith for example . x264 does have a lossless mode, but it's YV12 only

a lot of this is subjective, so you should state exactly what your goal is . For example, some people like a bit of grain to remain so it looks natural, some people like it as clean as a "plastic doll" look.

also it's important to mention that your goal was to deinterlace this ( you mentioned this in another thread , if this is the same project?. It's important because some filters don't work with interlaced material or you have to toggle interlaced settings)

[royia]

OK. Here a 12 seconds sample:
http://extabit.com/file/28eej7i8kwnb5

Would love to hear how would you handle this kind of quality.
I'm looking for a light NR.

[onesloth]

A little OT. I've never used one but, based on other posts I've seen, it looks like you should have used a timebase corrector when capturing this. Even after denoising and deinterlacing, this video is still going to have the horrible horizontal distortions.

EDIT: And if you want more people to comment, post a smaller sample. More like one second.

[royia]

What is a Timebase Corrector?
Could you point me to one?

I'll post something shorter, Moreover I'll use Sendspace so you'll be able to download it immediately.

[onesloth]

http://www.google.com/search?q=Timebase+Corrector

[markanini]

If you don't have acces to a TBC maybe you'll find this plugin usefull: http://avisynth.org/vcmohan/DeJitter/DeJitter.htm

[royia]

I'll give a try, Thank you.

Anyhow, posted a shorter (Different) file at:
http://www.sendspace.com/file/d6nd4p

This requires no waiting time and it is a fast site (60 MB).
I would be happy to know how the experienced user would deal with such material.
Thanks.