Graphics Reference
In-Depth Information
Also, if an imported image is invisible when it's used, it might have an
incorrectly labeled Alpha Channel. Switch the Alpha Interpret to 'Ignore' and
the image should reappear.
Frame Rate
The next file to import will be a background movie we'll use -
CloudsLoop.mov
.
This is a highly compressed QuickTime file, but it'll work fine since it'll be treated
with effects and textures. Open the Interpret Footage dialog for
CloudsLoop.mov
(Ctrl
F). Notice that the Alpha area is now inactive - the file has no Alpha to
consider. Instead, we need to adjust the movie clip's Frame Rate.
If you're in a PAL
country, change the
setting to 25 fps,
while NTSC users
need to set it to
29.97 fps. This is just
a good habit to follow
- keep your Frame Rates consistent. Of course, you can intermix different
Frame Rate footage, often for unique effect, but for most circumstances keep it
consistent - match your footage to your intended project and output rate.
Fields and Pulldown - Part 1: Separate Fields
Nothing can drive a designer/editor/animator/brain surgeon crazier than Field
Order issues. Some people hate them, while I have no problem with them and
actually prefer using them (and in ways that most animators don't consider). In
fact, I often mix use of both systems (fields with frames) for different effects. If
you have absolutely no idea what fields are, jump to the Glossary for a quick
definition or hop on-line and go to
www.focalpress.com/companions/024051968X.
Usually, when you import movie
format footage (QuickTime or AVI)
the Field Order has been embedded
into the file, and After Effects will
automatically set the correct Field
Order. But, just as often, some clips
