Grass Valley Xbuilder Vertigo Suite v.4.8 - Manual (Page 136)

9-4 Xbuilder User Manual
Appendix B - Quick reference to Xbuilder’s settings
Display settings
Although the Display setting page has various settings, the bulk of the settings deal with the
OVERFLOW and UNDERFLOW properties, which are set on this page and reported in the
Overflow column in the Playlist Editor.
At the center of the overflow/underflow discussion are TIMESLOTS . A timeslot is a set of
playlist items between two hard-starts (a hard-start is a playout type for bringing playlist to
air at a specific time). The total time available in the timeslot is determined by the difference
of the two hard-start times. Ideally, the timeslot should be filled with enough content to
exactly fill this time.
Overflow (or underflow) refers to the difference between the total time of the content in a
timeslot and the time available in the timeslot. When the total time of the content in a
timeslot exceeds the time available, there is an overflow. Similarly, when the total time of
the content in a timeslot is less than the time available, there is an underflow.
The overflow column in the playlist indicates if a timeslot has an overflow or an underflow.
The time difference is displayed as a positive value for overflows and a negative value for
underflows. Furthermore, it is possible to specify thresholds for overflow and underflow.
When the overflow or underflow in a timeslot exceeds the threshold, the overflow column is
colored to draw attention to the problem.
Figure 9-2. Display settings
• Tile size for proxies - The size (in pixels) of proxies used in to display the assets in a
category.
• Overflow/underflow error color 1 - Specifies the color used to in the playlist’s
Overflow column to indicate that a timeslot contains an overflow or underflow that
exceeds acceptable thresholds.