User manual

Converting Video Files
Nero Recode
28
Bit rate mode
Defines what kind of bit rate the audio codec is using.
Constant bit rate (CBR): Specifies a constant bit rate, i.e., the data
flow per unit of time and thus the quantity of the saved data is the
same over the entire audio file.
Variable bit rate (VBR): Specifies a variable bit rate, i.e., the data flow
per unit of time and thus the quantity of the saved data adapts to the
dynamics of the audio file. The bit rate, for example, can be lowered at
quieter points in the track.
Average bit rate (ABR): Specifies an average bit rate, i.e., the data
flow per unit of time and thus the quantity of the saved data adapts to
the dynamics of the audio file but the average bit rate tends to the
defined value. In principle is it a variable bit rate with a limited bit band
width and thus combining the advantages of the variable and the con-
stant bit rate.
Bit rate
Specifies the bit rate
, i.e., the data flow per unit of time and thus the
quantity of the saved data.
If the bit rate is low, less data is transferred. The file is then small, but
output quality is lower. If the bit rate is high, more data is transferred.
The file size is then large, but the output quality is high. A value of 128
is near CD quality.
The values available are determined by the audio format you have
selected.
Quality
Defines the quality level if VBR is used for bit rate mode. You can set
the variable bit rate between 0 and 100. 0 means the lowest, 100 the
highest quality.
Compression
Defines the compression rate for lossless codecs.
Sampling rate
Selects the scan rate. The scan rate is the frequency that a signal is
scanned per time interval.
The values available are determined by the audio format you have
selected.
Audio channels
Defines the audio channels of the output. You can select a down mix-
ing of the audio channels, but no up mixing.
Keep original is only available if the target audio codec supports the
source audio channel configuration.
The values available are determined by the audio format you have
selected.
Bit per sample
Specifies the scan accuracy and thus determines the quality of the
individual scanner. The higher the bit sign, the more accurate.
Only available for WAV.