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101Control of VTRs and Disk Recorders
Chapter 12 External Devices
VTR/Disk Recorder Timeline
Note
When executing a VTR/disk recorder timeline using a disk recorder, note the
following points.
• When carrying out keyframe settings, be sure to recall the file for operation
first.
• Set the keyframe duration to at least 30 frames.
• If the duration of the recorded video clip is less than the keyframe duration,
after playback to the end of the clip, the remainder of the keyframe duration
is filled with a still of the last frame of the clip (see figure below).
• From pressing the [RUN] button to the time when the effect actually starts
execution may take around one second.
In order that pressing the [RUN] button after [REWIND] make the effect
start execution as soon as possible, set cueing up of the file for operation as
rewind operation
1)
. In the first keyframe
2)
to be executed with [RUN], for
the cued-up file, do not set the start point, but set only the start command.
1) If the setting when the [REWIND] button is pressed is for the first keyframe to be executed,
then the first keyframe is executed, and otherwise the setting for the Rewind Action is carried
out.
2) If the setting when the [REWIND] button is pressed is for the first keyframe to be executed,
then the second keyframe is executed, and otherwise the first keyframe is executed.
• To execute an effect, be sure to carry out a Rewind.
For example, when the start command only is set for a keyframe, playback
starts from the current position, in the same way as with a VTR (no automatic
cue-up).
KF1 KF2 KF3
Example: When the recorded clip for keyframe 1 has a duration of 15 frames
30 frames
15 frames
: Interval for which clip is recorded
: Interval in which still frame is displayed
In this example, when keyframe 1 is executed, the first 15 frames consist of clip
playback and the remaining 15 frames show the 15th frame as a still image.
30 frames
15 frames