clip opacity not working above 50% on layer1 default setting

[Zoltán]

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.

phpBB [video]

[Joris]

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.

[Zoltán]

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.

[Joris]

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.