Grass Valley T2 Classic iDDR Addendum - Manual (Page 50)

50 Users Manual (Addendum for SP3) November 30, 2010
Chapter 4 T2 Alpha Option
Supported formats
Movies:
• AVI format (GrassValley HQ/uncompressed)
• QuickTime format (ProRess4444/Animation/uncompressed)
Still images:
• TARGA
What is Fill and Key data?
Fill data is a base image on which transparency information is overlaid, and Key data
is an image that will be used as transparency information. Key data acts as a mask on
Fill data.
A still image containing transparency information has a data area for transparency
information called the alpha channel in addition to the data area for color information
that is represented with RGB color. Your T2 will output color information as Fill data
and the alpha channel as Key data.
Fill Key Fill Key