Grass Valley Profile XP Aug 16 2004 - Manual (Page 19)

23 July 2004 Profile XP System Guide 19
Chapter
1
Introducing the Profile XP Media
Platform
The Profile XP Media Platform provides a multi-channel, high bandwidth platform for
the storage and manipulation of video and audio in professional applications. The
Profile XP Media Platform has a wide range of capabilities, from a stand alone digital
disk recorder to being part of a large network of video servers. The Profile XP Media
Platform can be used in a wide variety of applications including spot insertion, program
delay, store and forward, and multi-channel replay.
Profile XP Media Platform features
Encoders and decoders in the PVS1000 models process standard definition MPEG-2
video, while encoders and decoders in the PVS2000 models process high definition
MPEG-2 video.
The PVS1100 Series uses video codecs to process video. You can configure each of the
codecs to encode and decode video using the DVCAM, DVCPRO or MPEG-2
compression standards. The PVS1100 Series processes video using DVCAM,
DVCPRO 25, and MPEG-2 at bits rates up to 25 Mb/s. The 50 Mb/s software option
allows you to process video using DVCPRO 50, and MPEG-2 at bit rates up to 50 Mb/s,
including the D10 format at 30, 40, or 50 Mb/s. You to play clips of any of these
compression types through any codec without any configuration changes. For example,
a DVCPRO 50 can immediately follow an MPEG-2 clip at 12 Mb/s on any playout
channel. The only limitation is that you cannot create or play master clips (complex
movies) that include more than one compression type.
The PVS3000 Series combines both standard and high definition capabilities in a single
Profile XP Media Platform. You can record and play SD clips in all the
PVS1100-supported formats on your SD channels, and concurrently record and play HD
clips in all the PVS2000-supported formats on your HD channels.
The PVS3500 Series extends these capabilities to allow you to play both SD and HD
MPEG-2 4:2:0 clips through an HD decoder. You can play both 1080i and 720p HD clips
through the same decoder. Clips are played out in the format specified for the output
assigned to the channel, but all HD outputs on a system must be set to the same standard
(1080i or 720p). The decoder can play out on either a standard definition output or a high
definition output.
All clips are either up- or down-converted appropriately to play on that output, and their
aspect ratios are adjusted according to your custom settings. As with the PVS1100, you
cannot create or play master clips (complex movies) that include both standard and high
definition material.
This definition-independent software option (Agile Output) can be installed on a
PVS2000 or a PVS3000, although up- or down-conversion is dependent on your output
hardware. For example, your PVS2000 cannot down-convert HD material without
adding standard definition output cards.