White-on-White Fade issue

Andy_L wrote on 6/1/2010, 5:11 PM
I've got white text sitting on top of a white png logo image. Both are on separate tracks, against black backgrounds.

Where the white text and the white logo overlap, I get a "double white" effect during fades in and out--these overlap sections are brighter than the rest of the image.

Aesthetically it's a little artificial looking. I've tried different blend methods, but nothing seems to make this go away. Any ideas on how to balance the brightness of the overlap regions (without creating a logo image that includes the text)?

Comments

fldave wrote on 6/1/2010, 5:15 PM
Do you have the lower track as a "child" of the upper track, with a multiply/add setting or something similar?

I can see how that could cause what you are seeing.
Andy_L wrote on 6/1/2010, 6:18 PM
child/parent settings don't seem to make any difference.
Former user wrote on 6/1/2010, 6:41 PM
Is the white actually getting whiter or are you talking about the text lingering visually longer than the white background?

Dave T2
Andy_L wrote on 6/1/2010, 7:02 PM
During the fades--and only during the fades--the overlap areas are brighter. This looks strange, because everything is white to begin with, so it should appear uniform during fades.

You can verify this yourself by creating two video tracks (or one) and putting two white text media events on the tracks such that one text block is superimposed over the other. Create an identical fade on both tracks. Where the text overlaps, the white appears brighter.
Former user wrote on 6/1/2010, 7:08 PM
You can avoid this by not doing a fade on those tracks. Add another track above and dissolve it in and out. If you are fading to black, put a generated black event on this track, if you are dissolving to white, same thing.

Dave T2
Andy_L wrote on 6/3/2010, 7:41 PM
Thanks! That's a nice creative solution.
fldave wrote on 6/3/2010, 8:57 PM
It might be related to the type of fade you used. Right-click the area of the fade, and the menu that appears has a fade type option at the top. If it was not a straight line fade, like one that is bowed at the top, then both fade in and fade out would not be equal.
Rory Cooper wrote on 6/4/2010, 12:18 AM
is one piece of media with an alpha and the other not?
is the alpha correctly selected?
Grazie wrote on 6/4/2010, 12:53 AM
Blast the PNG-white to a transparency.

And that's what I'd do.

If you have a problem in doing this send me the PNG and I'll do it in 20 seconds!

Grazie