Telestream lightspeed live capture, Руководство пользователя

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Using the Tape Capture Web Application
Tape Capture Controls and Operation Status
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Lightspeed Live Capture User Guide
Discontinuity Threshold —Specifies the minimum number of skipped frames that
constitutes a discontinuity (timecode break) state. This threshold affects both Create
New File on Discontinuity and Abort on Discontinuity, when enabled. Note that
decremented and repeated frames always count as timecode discrepancies, and for
these discrepancies, the threshold setting is ignored.
Create New File on Discontinuity —When checked and timecode discontinuity is
detected, specifies that the current media file is closed and a new media recording file
is opened. During an active capture recording, if a discontinuity is encountered, the
current capture file will complete, and a new media file recording will immediately
start.
Timecode Discontinuity Definition
Time code discontinuities are defined as follows:
•
Time code increments by a value equal to or greater than the selected Discontinu-
ity Threshold value.
•
Time code repeats. The Discontinuity Threshold value is ignored in this case.
•
Time code decrements. The Discontinuity Threshold value is ignored in this case.
Example 1 : A time code incrementing from 00:00:30;10 to 00:00:30;15 would be
detected by a threshold of 4 or less.
Example 2 : A time code repeating from 00:00:30;10 to 00:00:30;10 would be detected.
Example 3 : A time code decrementing from 00:00:30;10 to 00:00:29;00 would be
detected.
Ignore Frames When Servo is Not Locked —If enabled, all frames captured while the
servo is in the unlocked state (as reported by the VTR) are excluded from the output file.
Create New File When Servo Relocks —If enabled, creates a new media file when the
servo relocks after being in the unlocked state. When a servo relock is encountered
during an active capture recording, the current capture file will complete, and a new
media file recording starts.
•
If Create New File When Servo Relocks is enabled and Ignore Frames When Servo is Not
Locked is disabled, the system may create unwanted (unlocked) frames at the end
of output files.
•
If Create New File on Discontinuity is enabled and Ignore Frames When Servo is Not
Locked is also enabled, the result may be an output file that contains a discontinu-
ous timecode, even though Create New File on Discontinuity is enabled and the
timecode was always incrementing. This occurs because of the system ignoring
frames, regardless of the timecode, while the servo is unlocked. With this configura-
tion, the frames captured during the period when the servo was unlocked will be
excluded from the output file. New frames would then be added to the file when
the servo relocks, which would cause the output file to have discontinuous time-
code. To avoid this scenario, enable the
Create New File When Servo Relocks option.