Grass Valley PVS Series System Guide v.4.0 Dec 10 200 - Manual (Page 124)

Chapter 5 Modifying a Channel: Video Settings
124 Profile XP System Guide July 27, 2001
Recording VBI information uncompressed
The Profile XP Media Platform provides the ability to store up to 6 lines of
uncompressed Vertical Blanking Interval (VBI) information along with your clips.
This feature is desirable for uses such as closed captioning which would be seriously
degraded by losses incurred at lower video compression data rates. However, storing
VBI information in uncompressed form can add up to 3Mbs to your storage
requirements.
Specifying lines of VBI information to store uncompressed involves using the
Channel Configuration dialog box to select which lines the channel will treat as
uncompressed data.
To select which VBI lines to record as uncompressed data:
1. Choose Channel Configuration in the Configuration Manager dialog box. The
Channel Configuration dialog box appears.
2. Click the tab for the channel you want to modify, then the Video Track icon ( )
in the configuration tree.
3. Click VBI Encoding . The lines treated as uncompressed data are listed.
4. To remove lines, select a line number, then click Remove .