User manual

Recoding a DVD to Nero Digital
Nero Recode
51
The following setting options are available in the Main profile area:
Check box
Bidirectional
prediction
If this check box is selected, encoding is carried out with the help of
B-VOPs.
Input field
Maximum
consecutive B-
frames
Specifies the maximum number of B-frames that can be used in a
GOP.
This input field is enabled only when the Bidirectional prediction
check box in enabled.
Check box
CABAC
If this check box is selected, the Context Adaptive Binary Arithmetic
Coding encoding method is used.
Check box
Weighted
prediction
If this check box is selected, reference frames can be re-weighted
during motion predictions. This increases the encoding efficiency
especially during cross fading.
Check box
Interlaced
encoding
If this check box is selected, interlaced-encoded output material can
be saved as interlaced material again.
Only possible if the source video file is interlaced.
The following check box is available in the High profile area:
8 x 8 Transform If this check box is selected, the default 4x4 transform used by the
encoder is changed to an 8x8 transform. This allows for better
compression with high-definition resolutions.
This setting depends on the chosen profile.
See also
 Encoder Settings → 49
7.3.3 Visual Enhancements
The settings in the Visual enhancements entry use human perception patterns to achieve
better overall quality.
This means, for example, that the quality is better in the middle of the picture than at the
outer edges because the eyes tend to focus on the middle and do not notice slight blurring at
the edge. Because quality is "saved" at the edge, you can either improve overall quality or
achieve greater compression. This means that you can achieve greater compression without
any appreciable loss of quality.