Graphics Reference
In-Depth Information
Preparing Imported Resources
Danger Will Robinson!
You have a simple choice now: proceed to the next chapter, where you'll begin to
create projects and compositions, learning how to animate and apply effects.
Alternatively, you can spend a few minutes prior to the fun stuff to learn how to
avoid technical traps and pitfalls of file format settings. Many experienced After
Effects designers I know all wish they had grasped file quirks and how to adjust
them before delving heavily into the actual animation and rendering process. In
After Effects, ignorance is not bliss.
You should already know how to import (Ctrl
I) various file
types: movies, stills, audio, and projects. Now we're going to cover some critical
tweaks, called Interpretation, that need to be applied to each imported file.
We'll be examining file Alpha Channel options and Frame Rate assignment. That
often-frustrating subject of Field Order deinterlacing will be clarified, as will how
24 fps film or Progressive Scan HD/SD footage can be manipulated to let you
work more efficiently. Additionally, we'll squeeze in a look at Anamorphic image
compression and how Pixel Aspect Ratio affects your images.
I or Ctrl
Alt
Interpretation Rules!
The Interpret Footage dialog
(accessed in the Project Window
by selecting a file then pressing
'Ctrl
F') defines how After
Effects will dissect a file as it is
being utilized in a project. If you
don't have the correct
interpretation settings, your
project won't render correctly.
Each media format has its own
unique set of options that must
be 'interpreted' differently: Still
Images, Movie Clips, and Audio.
There are even instances where
you'll actually have multiple
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