Render Nested Layers

[lazzhar]

Sounds a weird problem to me. Hope I won't face it :D
You can always render seperatly the composite under the nested layer then import the result ... a quick dirty workaround I know :shrug:

[Lederhosen]

Cheers lazzhar - that's what I was thinking. Which format would you render to so as not to lose any quality? I've tried .targa sequence and uncompresssed Quicktime, but there's still a noticeable loss of quality (which, surely , there shouldn't be ..?). It probably doesn't help that it's 16/9 anamorphic..


Any suggestions appreciated.

[lazzhar]

Render to a Quicktime file format using a TIFF compression and keep the Alpha transparency. Using Targa should cause any quality losses unless as far as I know.

Good luck.

[lazzhar]

Maybe the losses you are refering to are coming for the interpolation that Combustion applys if you resize fotages. There is some supersampling that blurs things a bit?

[Lederhosen]

Lazzhar, YES! - resized footage is causing probs too. Do you mean that there's some supersampling that cures it or causes it ? What's the correct way to resize footage? Anything resized with embedded alpha has horrible artefacts when rendered. This is so basic and easy in AfterEffects and I'm amazed how tricky it is in Combustion :sad: .

[thatoneguy]

Unless you use some incredibly archaic N'th pixel discard process for resizing, scaling down an image is by definition supersampling. (Generating a pixel value by sampling multiple other pixels.)

I just tried to duplicate your problem.

I created a composite. imported some footage.
nested it inside of another composite. And rendered out an image at a custom resolution. It resized and saved. I just tried nesting it in about 5 composites... still worked.

Can you create a process to duplicate your problem?

Are you sure your Root composite isn't just too low of resolution? If it doesn't crop in the viewport, it shouldn't crop in the viewport.

[lazzhar]

Usually supersampling would help giving better quality for your renderings. In recent versions of Combustions there is a cool feature that lets you choose between filtering method when you resize up or down fotages, something like Gaussian, Mitchell, Box ..etc things e you might be familiar with in 3D rendering programs.

[Lederhosen]

Thanks for the input, guys


im_thatoneguy, I basically have 2 probs

1) I'm doing the same as you AFAIK, but nested composites ignore frame size changes from the render panel

2) horizontally resized footage renders with vertical black lines and vice versa. I'm sizing down tgas horizontally.


lazzhar, unfortunately the version I have doesn't allow to choose supersampling method AFAIK, but anything without fine black lines would be nice

[PiXeL_MoNKeY]

You have to use the resize operator in Combustion 4 to have access to different imterpolation methods. You don't have the options when you are just scaling a layer.


-Eric

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