#Dissolves in VP
7 messages in this thread
Gary- I forgot to reply to an earlier thread regarding dissolves with VP.
I use TAPCIS and when I logged on, I lost the old message, so I thought I
would tell you and hopefully the info would help. I have had problems in
the past with the Darkening Dissolve in VP. However, the solution that
seems to work properly is this:
Dissolving from image A to Image B….
1) Make sure that both images are rendered with Alpha ON. That seems to
be what causes the darkening, if one image has no alpha info.
2) In VP, be sure to use Queue for the Alpha Box.
3) Fade-In image B.
I have faded A out while fading B in and it seems to work OK. One thing I
found is that you must have Alpha info in both images. It also has to be
3DS2 alpha info… an alpha channel created by QFX doesn't work (don't know
about HiRez QFX) because it's a grayscale alpha where 3DS2 is a B/W matte.
If the images that your dissolving between were created in another package
( TIPS, RIO, etc.) then load them up as a background in an empty scene in
3DS, and render them out to disk with Fields OFF and Alpha ON. These steps
seemed to cure my dissolve problems. Hope that helps.
-Mark
Thank you Mark! I _thought_ I remembered that the problem you had was
related to no alpha information in one of the images. I'm pretty sure that
this will solve Noah's problem, and I'll use your information to get inside
the code and see if we can generalize it a little bit more for release 3.
Thanks again for clearing this up. Muchas gracias,
– G
Gary:
I guess I jumped in a little late to this thread – but why do you need to
render with alpha on to get a dissolve in VP without the darkening? We had
this problem on a rush project and ended up faking it. What gives??
G(P)
I haven't looked into it in any depth yet (no pun intended), but it appears
that you've got to have alpha on, and you've got to use two 32-bit images
that have been rendered in 3DS, for the fades to be completely linear.
– G
Another mystery solved!
Thanks.
Gregory-
I ran some tests this morning and passed them to Gary. I still can't get
one image to fade to another even if they are both 32-bit. I can get a
32-bit title to overlay over a 24-bit or 32-bit background as long as you
use "real" alpha: pseudo alpha or a bit map doesn't cut it.
The only way I found to fade from one image directly to another is to make
a flic or TGA series that goes from pure black to pure white (or vice
versa), define this as the image alpha on the overlay image, and leave both
images with NO transition. This may have been how you faked it before.
–Noah
I'm sure glad it's not just me!