Add dirt filter?

[donone]

Anyone know of an Avisynth filter which imitates the film being dirty?
I have an add Gaussian noise filter but this isn't the same effect.

I am trying to make two movies match each other in terms of looking similar - one is dirty the other isn't.

[Kariudo]

addgrain perhaps?
http://avisynth.org/warpenterprises/

I think it would be easier, look better and compress much easier if you tried to clean up the "dirty" footage rather than trying to match the noise

[donone]

Yeah, I used that, its just Gaussian noise.

[Scintilla]

Are you talking about adding things like spots and scratches?

[Qyot27]

You could break the clean footage down into bitmaps, process them with Photoshop or GIMP, and then splice them back together, if those programs have what you're looking for and AviSynth doesn't. Photoshop's actions really make that easy to do, although it may take some time. I don't know what GIMP has that's equivalent, since I don't use it too much.

Some NLEs have old/damaged film filters or plugins - you could try those.

[donone]

yeah dirt and scratches
i mean i have found vdub and prem and AE filters to do it. i could just import and spit the a dirtied file out again
but i was hoping to do it on the fly in AVS
but guess it must be impossible

[Qyot27]

yeah dirt and scratches
i mean i have found vdub and prem and AE filters to do it. i could just import and spit the a dirtied file out again
but i was hoping to do it on the fly in AVS
but guess it must be impossible

There is a way to use VirtualDub's filters through AviSynth, but I've never attempted it.

http://avisynth.org/mediawiki/Shared_functions

Basically, it would seem that the VDub filters need an interfacing file for importing and defining them first. If the dirt and scratches filter isn't included in those AVSI functions, then you'd have to write one for it yourself, or find someone knowledgeable enough on doing so to do it for you.