View Full Version : Removing noise


James A. Davis
December 4th, 2005, 12:51 AM
Is there a way to do this? With After Effects, Premiere, Final Cut, etc?

Ruben Moreno
May 24th, 2006, 02:02 AM
I'm interested on this topic too. I thought I'd better reply on this thread rather than starting a new one so James could read the reply too.

I guess it's not easy to remove that noise, if it's dark there is not much to do, but I would like to hear from the pros.

Thanks in advance.

Glenn Chan
May 24th, 2006, 12:25 PM
Premiere and FCP don't have good noise removal tools IMO.

Use after effects 6.5 and use the "remove grain" filter. It's based on grain surgery I believe.

If you want a low-cost alternative and have Photoshop (non-Elements), use a Photoshop noise reduction tool like Noise Ninja or Neat Image. Unfortunately, batch actions/processing is VERY VERY slow. So is AE + "remove grain".

If your footage is 60i and you want to do the Photoshop thing, you probably want to handle the interlacing correctly (which would be annoying).

2- An alternative is to hide the noise with diffusion effects.

Emre Safak
May 27th, 2006, 08:55 AM
If you don't mind getting your hands dirty, avisynth (http://www.avisynth.org/) offers the best results, because hackers are constantly making new filters (http://www.avisynth.org/warpenterprises/) for this sort of thing. You can keep abreast of developments here (http://forum.doom9.org/showthread.php?t=51181). Most recently I used FRFun7 (http://forum.doom9.org/showthread.php?t=110200) on an underexposed DV clip, and it worked as well as could be expected.

Video denoisers differ from image denoisers; the former can exploit the fact that noise can be averaged out temporally.