2. WHAT IS KEYFRAMES?
-In animation and filmmaking, a key frame (or keyframe) is a drawing or
shot that defines the starting and ending points of a smooth transition.
These are called frames because their position in time is measured in
frames on a strip of film or on a digital video editing timeline. A sequence
of key frames defines which movement the viewer will see, whereas the
position of the key frames on the film, video, or animation defines the
timing of the movement. Because only two or three key frames over the
span of a second do not create the illusion of movement, the remaining
frames are filled with “inbetweens”.
4. 1. LINEAR KEYFRAMES
-This is the most basic form of interpolation in After Effects and
it utilizes a straight uniform rate of change between two
keyframes. This keyframe type is indicated by the default
diamond icon. Remember that this keyframe type is always
abrupt and very mechanical. Most professional animators and
Motion Designers will not use linear keyframes very often.
5. -Auto bezier takes linear keyframes and smooth out the rate of
change by automatically generating curves to the keyframes. This
allows the element to move more fluidly. To change a linear
keyframe to an auto bezier keyframe, just hold down the Cmd⌘
(Ctrl) key on your keyboard and then click the keyframe. Now, your
linear keyframe is an auto bezier keyframe. If you want to revert it
back to linear just repeat the process.
Note: This is only adjusting spatial interpolation (motion paths).
2. AUTO BEZIER
6. 3. CONTINUOUS BEZIER
-Whereas auto bezier smoothed out the rate of change
automatically, continuous bezier does so manually. To do this you
need to highlight the keyframes you want to change, then press
Cmd⌘ (Ctrl) + Shift + K on your keyboard. A information box will
then come up allowing you to manually adjust the interpolation.
7. -Bezier is where you have full manual control and functionality over
the motion path and or the value graph. In order to adjust this
manually you need to access the motion path of your element
within the composition panel. Or, you can adjust things by accessing
the graph editor, located in the timeline panel.
4. BEZIER KEYFRAMES
8. -A hold keyframe does exactly what the name implies, it holds a the
layer on a specific keyframe. This is great for freezing footage.Hold
Interpolation is indicated by a square shaped keyframe, you can
apply this type of interpolation by selecting your layer and then
going to Layer > Time > Freeze Frame.
5. HOLD KEYFRAMES
9. -Keyframes are essential to creating animated
effects and motion graphics in After Effects. With
programmes like Animate or Character Animator,
you deal with only the animation portion of your
production. But with After Effects, you can
composite animated elements onto real-world
video clips.
What are keyframes used?
