Cisco D9858 User Manual

Setup Menu
111
Menu Item
Description
Parameters
HD Bitrate
This sets the transcode channel
output bit rate when HD
MPEG-4/ AVC to HD MPEG-2
transcoding is selected.
10 to 25 Mb/s in 400 b/s
increments. The default is 16.0
Mb/s.
SD Bitrate
This sets the transcode channel
output bit rate when HD to SD
transcoding is selected for the
output channel.
2 to 15 Mb/s in 400 b/s
increments. The default is 4.0
Mb/s.
HD/SD GOP
Control
This selects the Transcode
Group of Pictures (GOP)
format.
User GOP (MN), I Frame Sync, or
Fixed GOP
HD/SD User GOP
(M N)
This selects the transcode
manual GOP format value. The
transcoder attempts to reuse
information from the encoded
bit stream to improve the video
quality of the transcoded
stream. Amongst others, if the
incoming GOP structure is
similar to that of an MPEG-2, it
will reuse the frame allocations
from the incoming stream as
long as GOP Control is set to I
Frame Sync. If the downstream
transcoder does not support
altering GOP structures, set the
GOP Control setting to User
GOP (MN). This will also
require the setting of the GOP
structure which is given as two
numbers, where the first is the
length of the GOP and the
second is the number of B-
pictures per sub-GOP.
Supported GOP structures - 1 0, 12
2, 15 2, 24 2 or 30 2
HD/SD 3:2
Pulldown
This enables or disables 3:2
pulldown.
Enabled or Disabled
SD Aspect Ratio
This selects the HD/SD
transcode channel aspect ratio.
4:3 or 16:9 (wide aspect ratio). The
default is 16:9. Set it to the
corresponding value.

Cisco D9858 Specifications

General

Brand	Cisco
Model	D9858
Category	Receiver
Language	English