Grass Valley Profile XP Aug 16 2004 - Manual (Page 139)

Selecting playout aspect ratio conversion
23 July 2004 Profile XP System Guide 139
Setting down-conversion aspect ratio
To select set the aspect ratio conversion for HD material on an HD/SD MPEG Player
channel on an SD output:
1. Double-click the video icon ( ) to expand the configuration tree.
2. Choose a video track in the configuration tree, such as Track 1 .
3. Click the Down Conversion button to see the aspect ratio choices
4. Select the desired aspect ratio conversion from the available options
- Letterbox - The 16:9 aspect ratio is maintained, centered on the screen, with
black bars filling the top and bottom portions of the 4:3 display.
- Half Letterbox - The picture aspect ratio is maintained, but the image is slightly
enlarged. The left and right sides the image are slightly cropped, and thin black
bars fill the top and bottom portions of the 4:3 display.
- Crop - The picture aspect ratio is maintained, but the image is enlarged so that
it vertically fills the SD display. The left and right sides of the 16:9 HD image
are cropped to fit in the 4:3 SD display.
- Compress - The picture aspect ratio is distorted. The image fills the screen
horizontally without cropping, and is stretched vertically to fill the 4:3 display.
This conversion generates Full Height Anamorphic (FHA) 16:9 SD material.