Option overview – Grass Valley T2 Classic iDDR User Manual
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T2 Users Manual –SP3/SP4–
October 17, 2011
Chapter 5 T2 Alpha Option
Option overview
You can play/import movies and still images containing transparency information
(alpha embedded clips). In addition, you can play a playlist in which alpha embedded
clips and normal clips are mixed.
In the list of the Browse or Bin tab, alpha embedded clips are displayed with icons
indicating that they contain alpha.
If an alpha embedded clip is loaded to the P1 or P2 channel, the Fill data is output to
the channel where the clip is loaded and the Key data is output to the other channel
(Fill/Key output mode). The Fill side channel is shown as "Fill" and the Key side
channel is shown as "Key".
NOTE: Icons corresponding to Fill and Key are shown during the front panel mode.
When you play a playlist that contains any alpha embedded clip, the system enters the
Fill/Key output mode and the Key side will output a black screen while a normal clip
is being played.
For more information about Fill and Key, see
"What is Fill and Key data?" on page 56
CAUTION: The Fill/Key output and normal modes will be switched automatically
while playing a clip. The video may be disrupted due to the output signal loss when
the modes are switched, however, this is not a system failure.