Combine / Blend frames at different sizes / resolutions

[KuleshovEffect]

I'm very new to Smoke, sorry if this is a dumb question.
I'm trying to comp a 720p element on top of a 5k background plate.
When I use the Blend&Comp node, I get No Result, and the message:
"PIPELINE : Unsupported input resolution mix in node"
This happens even if I add Resize node after the 720p element and change the resolution to 5k.
Surely there's a way to composite elements of different frame sizes - what am I missing?

TIA,
Ted

[imag4media · Accepted solution]

Make sure that the size, aspect ratio, and color depth are the same between the resize and the 5k clip and it should work.
If you've made sure size was the same, then I'd check the other 2.

Hope it helps.
Andy D.

[KuleshovEffect]

I had missed color depth, thanks for pointing that out! Now I can connect the nodes.

But that seems like an obtuse way to work - does every clip in CFX have to be the same size?

Coming from After EFfects, that seems odd to me.

Thanks,

Ted

[imag4media]

I can understand why it's counter-intuitive, although it can occasionally be handy. For instance if I have an artist who renders me out cleanup as 8-bit instead of 16-bit as I expect, the warning can be helpful. Another way to put multirez images together is using an Action node. It'll still bark at you if you try to put mismatched rez/colorspace as a FG/Key layer, but each layer can be it's own distinct size as well as distinct from the BG.

Anyhoo, hope it helped.
Cheers-
Andy D.

[KuleshovEffect]

You've been very helpful, thank you!

[BKM]

I will admit that this is one of the things about Smoke that annoys me.
Yes, most of the tools in CFX need to have the clips be the same res and bit depth.

This is why I use ACTION, which allows you to mix different resolution easily. Action has all of the blend Modes and the ability to color correct and key/mask/track in it as well. 

The only thing about Action is that the fill and matte clips entering a media input need to be the same res and bit depth, but that's not too much of an issue. If you need to do a split matte you can resize or use Source Front/Mattes inside of Action to do a split key.