Ulead MEDIASTUDIO PRO 6.0, Руководство пользователя, Страница: 200 / 360

MEDIASTUDIO PRO USER GUIDE 200
By looking at the analysis graph, you can pinpoint peaks in the graph which
would benefit most from being keyframes. For more on understanding
keyframes and compression, see the Appendix, page 337.
To edit the keyframes on the data rate analysis graph:
1.
Select the frame you want to make or
remove using the Keyframe Controller
beneath the Preview window.
2.
To make a keyframe, click the Add
Keyframe button. A keyframe is placed on
the Keyframe track and the frame in the data
rate graph changes to blue. To remove a
keyframe, click the Remove Keyframe
button. The respective keyframe disappears
from the Keyframe track and the frame
changes to gray. To return a clip to its
original settings click Restore.
Note: Removing a keyframe doesn’t remove the frame itself, it only removes the
reference to that frame as a keyframe.
3.
Click Save As to save the new keyframe information to a Key file
(*.KEY). To apply the key file, you need to re-render the video file
again, making sure you specify the key file in the Keyframe control
group box in the Video Editor tab of the Video Save Options dialog
box (see page 193).
Note: Not all compression schemes will follow the key file, and those that do, such as
Cinepak, may still insert keyframes wherever they determine there is a need. This is
out of the control of Video Editor and in the hands of the compression scheme itself.
Therefore, you may sometimes find that removing keyframes does not change your
video appreciably in your next analysis.
Preview window with
keyframe controller
Data Rate Analysis graph