Powerware Model V-2000B - Manual (Page 53)

DV and Graphics = 51
DV Video and Graphics
DV-format video and TARGA Graphics are standard equipment on Multi-Format Image
Servers. DV and Graphics is also available as an optional software accessory to extend the
capabilities of the Image Server. These features supports playout of DV-25 files in native format,
and TARGA graphics files including those with key and fill. DV and Graphics enables direct FTP
import from Photoshop ® , After Effects ® , Final Cut Pro ® , Xpress DV/Pro™, Liquid Edition and Vegas
video.
With DV and Graphics, the Im age Servers are able to function as both a graphics still-store
and an animation playout server. Three simultaneous outputs give it the power to combine video,
graphics and animation playback. Channels 2 and 3 can be ganged to provide key-and-fill playout,
while Channel 1 plays background video. The following capabilities are included:
Importing TARGA Graphics Files
The Image Server will recognize and ingest single -frame TARGA files via FTP from most
network-attached graphics workstations. TARGA files have a .tga extension, and may contain
an alpha (or key) channel. During transfer, the Image Server will split the TARGA file into a Fill
frame, and a Key frame if it exists. These will be converted to high-resolution MPEG-2 files,
one frame in length.
For example, if an original file is named Logo.tga, the MPEG-2 files created will be named
Logo.mxf (a fill file) and Logo_.mxf key (note the trailing underscore “_” added to the file name
of the key.) This allows the TARGA file to be used for key and fill applications.
Once a TARGA file is ingested, it exists only as an MXF MPEG-2 file. The processed file may
be transferred to-and-from network-attached storage, another Image Server , or a graphics
workstation, as two separate MXF MPEG-2 files.
The resolution of a TARGA image should be 720x480 for NTSC video or 720 x 576 for PAL. If
the original TARGA image is not of this resolution, the Image Server will re-scale it, possibly
introducing some dimensional distortion.
Animation Import
From the Image Server’s standpoint, an “animation” is a clip with a minimum length of two
seconds. A separate Alpha channel may or may not be present. Any graphics workstation
capable of exporting files supported by the Image Server can make transfers to it via FTP. If an
alpha channel is present, the naming conventions of the Key/Fill Mode apply. Many software
programs have the ability to create content compatible with the Image Server , including Final
Cut Pro® 4, Avid® DV Xpress, DV/Pro, Liquid Edition, Vegas video, and Adobe® After Effects®,
Premiere® and Photoshop®.