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MAX-CSE Web Interface
Stream Profiles Page Features (Cont.)
Feature
• Video In Rate
• Resolution
• Mode
Audio:
• Codec
28
Description
A drop-down list of data rates which allows the user to choose the amount of incoming
video data throughput available for use by the MAX-CSE.
• The larger the amount of available video data coming through the unit for encoding,
the better the outgoing video quality to the target IP device.
• Available video data rates: 6Mbps - 500Kbps
A drop-down list of resolution settings which allow the user to choose from two preset
resolution types. These options relate to the display size/resolution used by the outgo-
ing video stream.
• Available resolutions: D1 (default) or SIF:
• D1 is a resolution standard. In the NTSC system, "Full D1" means 720x480 pixels @
30 fps, and in PAL systems, full D1 is 720x576 @ 24 fps.
• SIF (Source Interchange Format) is a resolution standard defined as 352x240 @
30fps for NTSC and 352x288 @ 24 fps for PAL.
These two radio boxes refer to the mode assigned to the bit rate encoding quality of the
outgoing A/V stream.
Available bit rate encoding modes: CBR (default) or VBR
• CBR (Constant bit rate) relates to the bit rate quality used by the outgoing streamed
video data. Constant bit rate encoding means that the rate at which a codec's output
data should be consumed is constant. CBR is useful for streaming multimedia
content on limited capacity channels since it is the maximum bit rate that matters, not
the average, CBR would be used to take advantage of all of the capacity.
• VBR (Variable bit rate) relates to the bit rate quality used by the outgoing streamed
video data. Variable bit rate encoding varies the amount of output data in each time
segment based on the complexity of the input data in that segment. The goal is to
maintain constant quality instead of maintaining a constant data rate.
This section allows the user/administrator to define the encoding parameters for the
audio portion of the outgoing stream.
A drop-down list of audio codecs from which the user can choose the type of MPEG
audio compression used for the audio portion of the outgoing stream.
Available audio codecs: MP2 or MP3
• MP2 (MPEG Audio Layer-2) is used as a file extension for files containing audio data
of this type. It remains a dominant standard for audio broadcasting. This file type
allows the coding of audio programs with more than two channels. The main
difference between these two types is that MP2 audio files are generally larger than
their MP3 counterparts and are mostly used with MPEG-2 video streams.
Note: MP2 is recommended for use with a high bandwidth video stream (ex: MPEG-4
or 6 Mbps - 3 Mbps).
• MP3 (MPEG Audio Layer-3) is a popular digital audio encoding and lossy
compression format. It was designed to greatly reduce the amount of data required to
represent the original audio data, yet still sound like a faithful reproduction of the
original uncompressed audio to most listeners.
Note: MP3 is recommended for use with a low bandwidth video stream (ex: MPEG-2
or < 3 Mbps).
MAX-CSE/MAX-CSD10 Operation/Reference Guide
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