Grass Valley Profile XP Aug 16 2004 - Manual (Page 137)

Selecting playout aspect ratio conversion
23 July 2004 Profile XP System Guide 137
Selecting playout aspect ratio conversion
An HD/SD MPEG Player channel allows you to play SD and HD MPEG 4:2:0 clips
through the same output, either HD SDI or SD SDI.
If you select an HD output, all SD material is up-converted to HD. When this takes place,
you can specify how the aspect ratio of your material is modified for the 16:9 HD
display.
Similarly, if you use an SD output, all HD material is down-converted to SD. The aspect
ratio of your HD material is adjusted for the SD display.
NOTE: If you define two HD/SD MPEG Player channels using HD decoders on the
same board, both must use the same output type, either standard definition SDI or
high definition HD-SDI. If you want to use different output types for HD/SD
MPEG Player channels, you must use HD decoders on different boards.
Once you have selected the output to be used with your HD/SD MPEG Player, you can
select the default up- or down-conversion for clips played on that channel. You can
override this setting by modifying the clip’s properties using Media Manager.