User manual

Nero Digital expert settings
Seite 49
11.2.2 Encoding mode
The Encoding mode setting allows you to choose between the Real-time encoding (1
pass) and High quality encoding (2 pass) settings.
Coding in a single pass may take less time, but it does not offer the same quality as coding
in two passes.
If coding in a single pass is selected, two fields are available, Min. quant. and Max. quant..
You can use these to set the range for the permitted quantization factor. This determines the
degree of compression for the output file.
Remember that while greater compression reduces the output, it also involves a loss of
quality.
For this reason you should never exceed a quantization factor of 31.
This setting option is only available if you have selected Nero Digital, Sony Memory
Stick-Video or Apple iPod in the Nero Digital category.
11.2.3 Quality/Speed
The Quality/Speed entry enables you to make settings in relation to the quality and speed of
the coding process.
The Performance/Quality drop-down list can be used to select settings for the best possible
configuration of the options. When you choose Custom you can select the options yourself.
These options are explained below.
This setting option is only available if you have selected Nero Digital, Sony Memory
Stick-Video or Apple iPod in the Nero Digital category.
11.2.3.1
Motion search
In the Motion search drop-down list you can choose between None, EPZS (Enhanced
Predictive Zonal Search) and EPZS². These are algorithms for reducing image information in
P and B-VOPs.
EPZS² produces the best results in this setting, but requires more time for encoding.
The None setting produces the lowest coding efficiency. For this reason it is not
recommended.
11.2.3.2
NC Prediction
You can use the NC Prediction drop-down list to set the speed of the prediction of non-
coded macroblocks.
If you choose Fast, an attempt will be made to use a fast process to close the current
macroblock from neighboring, non-coded macroblocks. However, the quality of the output file
is poorer.
The None setting delays the coding process because the non-coded blocks are not
predicted but are rather analyzed in detail. This produces the best possible quality.
The Normal setting is recommended as it is the middle way.