Matrox MXO2 Installation And User Manual page 222

202
¦ Note
recommended that you use a constant bit rate.
¦ Note
in Adobe Encore. The maximum H.264 level and data rate accepted by Adobe
Encore for Blu-ray Disc authoring is level 4.1 at 35 Mb/sec.
Under GOP Structure , select the GOP structure that you want to be used to
5
encode your video:
Chapter 14, Using the Matrox MAX H.264 Codec with Adobe Software
specify a high target data rate to avoid having frames of blocky video in
your file.
When creating Matrox .264 files for Blu-ray Disc authoring, it's
Target/Minimum/Maximum data rate
•
your desired data rate. The higher the target data rate you select, the
better the video quality will be. Only the Target data rate will be
available if you selected Constant bit rate (CBR) . If you selected
Variable bit rate (VBR)
can set the target, minimum, and maximum data rates for the video
compression.
Matrox .264 files that have a high data rate may require transcoding
Source video complexity
•
complexity level of your source video. A complex video can be defined
as containing scenes with many colors, sharp edges, or transitions. The
Matrox MAX H.264 codec uses this setting to determine how much
compression is required in order to deliver high-quality video at your
specified target data rate. The default setting (15) is suitable for most
moderately complex videos. For simpler or more complex videos, you
may need to adjust this setting to obtain the highest-quality encoding
possible while respecting your target data rate. If the size of your
encoded video is good but the quality can be improved, lower the
complexity level setting. Your video will then be encoded with less
compression. If the quality of your encoded video is good but the size
is larger than expected, raise the complexity level setting. Your video
will then be encoded with more compression. In any case, you may
need to try different settings to get your desired results.
Determines how frequently the Matrox MAX H.264
Sample rate
•
codec verifies the current data rate while encoding and compares it to
your selected target data rate. If a discrepancy exists between the
current and target data rates, the current data rate is adjusted as
specified by the Data rate adjustment setting (see below).
Data rate adjustment
•
match your specified target data rate, this setting determines how
quickly the current data rate is adjusted to reach the target data rate. A
gradual adjustment produces smoother transitions than a quick
adjustment.
Use these sliders to select
, all three sliders will be available so that you
(Variable data rate only) Specifies the
When the current encoding data rate does not