RGB levels()/overlay()?

[wonkey_monkey]

Hi,

I would have searched for this, but search ignores terms under three characters long, like "RGB"!

I'm looking for RGB equivalents to levels() and overlay() - I write a lot of image manipulating stuff in RGB, but if I want to replicate what I've done (or replicate a combination of Photoshop filters and overlays) I get different results in AVISynth because levels() and overlay() convert to YUY2.

Can anyone help?

David

[actionman133]

Levels () works in both RGB and YUV without converting.

Overlay converts to a 24 bit YUV format (4:4:4) internally for processing but can output RGB if you want it to. Just specify it in the options (check the AVISynth manual for directions).

[wonkey_monkey]

From the manual:

Input for overlay is any colorspace, and colorspaces of different clip doesn't matter! The input clips are internally converted to a general YUV (with no chroma subsampling) format, so it is possible for the filter to output another colorspace than the input.

My mistake about levels(), though.

David

[actionman133]

That still matches with what I said... that Overlay internally converts to a YUV 4:4:4 (not YUY2, which is 4:2:2) for processing and then converts back to RGB.

Perhaps we can help you more if you can tell us specifically what you are trying to achieve with Overlay ()...

[IanB]

Layer() works nativly with RGB32.

[wonkey_monkey]

It was right there in front of me the whole time... thanks!

David