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Reducing video noise for underlit HD shots

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Reducing video noise for underlit HD shots
by samahcinema on Aug 15, 2007 at 8:37:11 am

I am finishing up a short film which for the most part looks pretty good. However, the DP underlit some shots and there's an excessive amount of video noise in a few shots- you know, increased grain and little squiggly lines.

does anybody know of any filters that actually reduce the video noise that results from underlighting? I of course have used the 3 way color corrector to minimize the appearance, but I'd like to go a step further...

any and all thoughts are welcome.

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Re: Reducing video noise for underlit HD shots
by Andy Mees on Aug 15, 2007 at 10:54:52 am

RE:Vision's new DE:Noise plugin was mentioned somewhere (probably here) recently
I haven'y had occasion to buy and use it yet but if the examples are to be beleived then its just what you need:
http://www.revisionfx.com/products/denoise/

a steal for the price if it lives up to the hype, and available for just $99 till end of Sept.



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Re: Reducing video noise for underlit HD shots
by Uli Plank on Aug 15, 2007 at 4:52:32 pm

I second this and these folks really know their stuff, give the demo a try.

But noise on HDV is made worse by the compression, you may not get satisfactory results from any tool.

Other tools to try: Grame Nattress' plug-ins for Apple Color have a good denoiser.

The denoiser in AE (starting from 7) is good, but slow (ex Grain Surgery).

Regards,

Uli

Director of the Institute of Media Research (IMF) at Braunschweig University of Arts

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Re: Reducing video noise for underlit HD shots
by samahcinema on Aug 15, 2007 at 6:07:00 pm

Thanks so much! Looks good.

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Re: Reducing video noise for underlit HD shots
by samahcinema on Aug 15, 2007 at 6:36:53 pm

I download DE:Noise, but didn't see how to actually get it into my FCP system... Going by what I had done to install Joe's Filter's, I took the Plug-In, opened up the package contents of FCP, and put the DENoise plug-in there. But then when I open up FCP, it either opens up with a red line over everything, or crashes. I then moved the plug-in from out of the Package Contents, and restarted FCP, but it's still crashing. Any ideas as to why this is happening and how i can solve it? Also, once I've downloaded the DE:Noise filter, how do I bring it into FCP?

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Re: Reducing video noise for underlit HD shots
by Peter Litwinowicz on Aug 15, 2007 at 11:28:23 pm

I've answered your "crashing" problem in another thread.

However, after reading this email, I believe I know the problem. The installer automatically puts the plugin in /Library/Plug-ins/FxPlug and you do not need to copy the version that we install in the directory with the manual, that's just there for reference. So delete the file you manually placed into the FCP package and I think you'll be good to go.

Pete Litwnowicz
http://www.revisionfx.com


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Re: Reducing video noise for underlit HD shots
by samahcinema on Aug 15, 2007 at 11:32:43 pm

Hi Peter,

I actually did do that and it was still giving me problems. I think I went a little crazy because I just decided to reinstall Final Cut Studio 2 again because it didn't seem like anything was working. I wish I got your post a little earlier. Hopefully it will all be OK with the reinstall, though I already did it and everything was still crashing- so now I've gone through and tried to delete any and all files associated with FC Studio 2, and we'll see how it goes when I do the reinstall. Do you think I should delete the DE:Noise pug-ins to be safe? I already deleted the ones that I manually put in the package contents... And by the way, where should DE:Noise show up when it's all done? Will it be an effect that I can access in the effects tab?

Thanks,
Samah

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