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326 Chapter 19: Video Post-Production
executing the queue renders scene frames 25 to
35.Movingtherangebarforthesceneislike
moving a t ime window within the scene.
Other Scene Range options are disabled when
Lock to Video Post Range is selected.
To offs et the s cene in time:
• Select Lock Range Bar to Scene Range.
TheSceneStartcontrolisenabledbuttheScene
Endcontrolremainsdisabled-synchronization
is controlled by the Scene Start value and the
length of the range bar.
TheSceneStartvalueisthesceneframe
number where playback begins. If Scene Start is
0, frame 0 of the scene is the first frame played
back; if Scene Star t is 12, f rame 12 is the first
frame to play, and so on.
The range bar length determines how many
frames of the scene to play. Dragging the end
point of the range bar changes the length of
the playback range. Although Scene End is
unavailable, its value updates to show the frame
number of the last scene frame that wil l be
played.
Dragging the range bar changes where the scene
is played within the final video. For example,
if you set Scene Start to 5 and move the range
bar to beg in at Video Post frame 20, frame 5 is
played at frame 20 of the final video, and so on.
To off set the s cene a nd change scene pl ay back r ate:
• Clear Lock Range B ar to Scene Range.
With Lock Range Bar to Scene Range clear,
both Scene Start and Scene End are enabled.
As before, Scene Start specifies the first scene
frametoplay.SceneEndspecifiesthelastscene
frame to play, and t he length of the range bar
determines playback speed.
If the r ange bar specifies the same number of
VideoPostframesastherearecorresponding
scene frames, then playback is at the scene’s
playback rate. If the range bar specifies
fewer frames, the scene is sped up. If the
rangebarspecifiesmoreframes,thesceneis
slowed down. When it executes, Video Post
automatically skips frames or adds frames to
control the speed of scene playback.
Forexample,ifSceneStartisframe5andScene
End is frame 35, the range bar represents 30
frames overall. If the range bar covers only 10
Video Post frames, scene playback is sped up to
fit30framesinto10ofthefinalvideo.Ifonthe
other hand, the range bar covers 120 frames,
scene playback is stretched to slow it dow n.
To add scene motion blur:
1.
SelectSceneMotionBlurintheSceneEvent
dialog.
2. Set the scene motion blur parameters.
The Scene event generates motion blur by
simulatingacamerawithanopenshutter.It
interpolates and then renders movement w ithin
a frame, to generate a series of images of the
moving object, instead of the default single
image.