Cisco PowerVu D9858 Installation And Operation Manual page 122

Setup Menu: Outputs: TS Out: Transcode,
B/R Mode
Description:
Parameters:
HD Rate
Description:
Parameters:
GOP Control
Description:
Parameters:
User GOP (M N)
Description:
Parameters:
3:2 Pulldown
Description:
Parameters:
4-70 Model D9858 Advanced Receiver Transcoder Installation and Operation Guide
This selects the transcode channel output bit rate mode.
CBR or VBR.
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.
This selects the Transcode Group of Pictures (GOP) format.
User GOP (MN), I Frame Sync or Fixed GOP.
This selects the transcode manual GOP format value. The transactor
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
receiver 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.
This enables or disables 3:2 pulldown.
Enabled or Disabled.
Continued
4023074 Rev B