Operation Manual
37 
  Video Bit Rate: This field is shown only if the encoder is set to CBR mode and the Bit 
Rate Selection control is set to Video Bit Rate. It determines the video elementary 
stream bit rate, expressed in bits/second. Note that the bit rate resolution is 
1000 bits/second. 
  Transport Bit Rate: This field is shown only if the encoder is set to CBR mode and the 
Bit Rate Selection control is set to Transport Bit Rate. It determines the overall 
transport stream bit rate, with a resolution of 1000 bits/sec; the encoder will calculate the 
appropriate video bit rate the yield the desired transport rate. Please note that all 
transport rates are achievable; in particular, the encoder may not be able to achieve very 
low transport rates if the audio bit rates are high. In these cases, the actual transport rate 
output by the encoder will be higher than the configured value. The actual transport rate 
is displayed in the Encoder Statistics Tab, after the Apply button has been pressed. At 
that point, the actual encoder video bit rate can be found in the Encoder Statistics Tab, 
under the Basic bottom tab. 
  Peak Video Bit Rate, Average Video Bit Rate: These two fields are shown only if the 
encoder is set to VBR mode, and determine the desired average and acceptable peak bit 
rates for the video elementary stream. The peak video bit rate must be between 1.5 and 2 
times the average bit rate; the user interface will enforce these limits automatically (i.e., it 
will update either the average or peak to be consistent with the value being entered). For 
both of these parameters, the resolution is 1000 bits/sec. 
Basic Tab – Audio Configuration 
  Audio Source: This parameter selects the audio source. The options are Analog Audio, 
directing the encoder will to use the analog right/left audio channels connected to the 
selected rear I/O panel, and SDI Embedded Audio, directing the encoder to extract 
embedded audio from the SDI input. If the video Input Source (see Basic Tab – Video 
Configuration) is set to Composite, this parameter is grayed out and forced to Analog 
Audio. It will be selectable only if the video input source is one of the SDI variations, or 
if Video Input Settings is set to Auto Detected. Please note that if the encoder is set to 
auto-detect the video input, and it detects a composite signal, the audio selection will fall 
back to analog audio regardless of the Audio Source settings. When SDI Embedded 
Audio is selected, additional configuration options become available, as shown below. 










