Resolume Forum

I get that, when the layer blend set to for example ADD and layer opacity set to 100%.
moving the clip opacity slider, shows the clip fully at the 50% position.

I know that the layer opacity is basically the same as the clip opacity, and this is no problem with the other layers (default opacity at 50%), but the layer 1 is defaulted at 100% with ADD,
so the user either has to switch the layer blend mode to something different like Alpha or move the layer 1 opacity from 100% to 50% for the clip opacity to work in the full range as expected.

Not quite sure if I understand the problem.

Add is a crossfade and is supposed to work as follows ( pseudocode ):

- opacity = clip.opacity * layer.opacity
- opacity < 0.5: result.rgb = bottomLayer.rgb + topLayer.rgb * opacity * 2
- opacity > 0.5: result.rgb = bottomLayer.rgb * (1 - opacity) * 2 + topLayer.rgb

If you want to have the full range of the fader affect the opacity of the layer, you should use 50Add instead. It's what it's there for.

yes I know, but anyone new to the software might not.

the problem is, that with a new composition, the default setting for layer1 creates a state, where the clip opacity has no effect above 50% on layer1.
Even when layer1 has nothing to crossfade with.

I am not a new user, but I have spent 5minutes of a hectic show setup to figure out why my opacity fadein in a clip on layer 1 shows the clip fully at 50%.

I am not asking for any modification to the formula.
But maybe the default layer blend mode could be set just for the layer 1 to 50add (as the layer opacity defaults seem not be easy to change).

That would allow a consistent clip opacity behavior, with the default composition settings.

If it were up to me, all the blends would be gone completely and we'd only have Alpha everywhere. Blending video is so 2006.