Cisco D9054 Installation And Operation Manual page 31

D9054 HD Encoder,
Audio Channels
The D9054 HD Encoder is equipped with two or six stereo audio channels. The
audio channels may be part of the video or stand-alone audio channels.
Encoding Bit Rates
Video and audio data can be encoded at the following bit rates and coding
standards:
Input Mode
Signal
Video Capped Up to 20 Mbit/s
Signal VBR
Up to 25 Mbit/s
Audio N/A 32 to 384 kbit/s
Signal
56 to 640 kbit/s
14 to 640 kbit/s
a. Dolby Digital is available as an order option.
b. Dolby Digital Plus is available as an order option.
c. AAC is available as an order option.
VBI Signals
The D9054 HD Encoder supports closed captioning according to EIA 608/708
embedded in the video signal.
Pre-Processing
The pre-processing includes:
• PreSight
The PreSight noise reduction removes noise and details that stress the encoder at
low bit rates. It is possible to adjust the filter manually during operation without
service interruption, or to set the filter to adjust automatically to the encoding
complexity of the video contents.
4038938 Rev A
Continued
Bit rate
™
noise reduction (adaptive low-pass spatial filter.)
D9054 HDTV Encoder Intstallation and Operation Guide
Scan Coding standard
Range
1080i, 720p MPEG-4 part 10
MP@L4
1080i, 720p MPEG-4 part 10
HP@L4
N/A MPEG-1 Layer II
Dolby Digital
Dolby Digital
passthrough
Dolby Digital
b)
Plus
c)
AAC
AAC
Passthrough
a)
2-3