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Chapter 17 Changing Clip Speed and Time Remapping 347
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The Y Axis
The y axis represents the frame numbers of a clip’s media file. For example, if a clip’s
media file contains 300 frames, the y axis ranges from 0 (the first media file frame) to
299 (the last media file frame).
Note: This is true regardless of the In and Out points you set for the clip. Even if the clip
has an In point at frame 100 and an Out point at frame 200, the y axis of the clip starts
at frame 0 of the media file and goes to frame 299.
When you choose a value for the keyframe on the y axis, you are choosing a frame
from the clip’s original media file. When you drag a time remapping keyframe up and
down on the y axis, a tooltip appears that displays which media file frame you are
assigning to that point in time in your clip. As you move the keyframe up, you choose a
later frame in your clip’s media file; when you move the keyframe down, you choose an
earlier media file frame. The top of the y axis represents the last frame of your clip’s
media file, and the bottom represents the first frame.
The X Axis
The x axis represents a clip’s playback time. Frames are always played back at the frame
rate of the clip. You can set a keyframe at any point on the x axis to specify which
media file frame you want to see at that moment in the clip.
For example, suppose you want frame 100 from a clip’s media file to appear 2 seconds
into the clip. In this case, you set a time remapping keyframe at 02:00 on the clip. Then
you vertically adjust this keyframe to the value 100.
Last frame of clip
First frame of clip
Length of clip’s media
file (in frames)