User Manual-Mac

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Chapter 10, Using the Matrox MAX H.264 Codec
Blu-ray Disc. For compatibility with most Blu-ray players and Adobe
Encore, we recommend using a simple GOP structure when encoding to
Blu-ray.
$ GOP size Select the GOP size in frames (must be a multiple of the
distance between P frames). The GOP size can be either 2048, or an
integer value between 3 and 254.
¦NoteWhen creating an H.264 elementary stream file for Blu-ray, the GOP
size must be less than one second of video. For example, if the frame rate that
you want for your encoded video is 29.97 fps, the GOP size must be 29 frames
or less.
$ Distance between P frames Select the number of frames between P
frames that you want for your GOP structure. This setting can be changed
for a simple GOP structure only.
6 Under Hardware Preprocessing, specify the hardware-related processing
settings for your encoded video:
$ Hardware scaling If your source video must be scaled for encoding,
select this option if you want the scaling to be done by the MXO2
hardware. This produces the best-quality results and frees your system’s
resources for other tasks. Clear this option to leverage your system’s
resources with the MXO2 hardware for even faster encoding times. If
enabled, specify the following scaling options:
• De-interlace video Select this option if your source video is
interlaced and you want to de-interlace your video before encoding.
This option can be used to display your encoded video on a monitor
that displays lines progressively, such as an LCD or computer monitor.
For all other instances, make sure this option is not selected.
• Retain aspect ratio when scaling If your source video must be
scaled for encoding, and its aspect ratio does not match your selected
compression aspect ratio, select this option to maintain your source
video’s aspect ratio. If this option is selected, MXO2 will encode your
source video as pillarbox video when encoding to a larger aspect ratio,
or letterbox video when encoding to a smaller aspect ratio. If this
option is not selected, MXO2 will encode your source video as
anamorphic video.
¡ Important When your source video must be scaled for encoding and
Hardware scaling is disabled, if you’re working with Compressor v3.5 or
later you can select
Preserve source aspect ratio from the Padding list in
Compressor’s Geometry pane to maintain your source video’s aspect ratio.
$ Noise Filter Sets the level of noise filtering that you want to apply to
your video before encoding. Increasing the noise filter level reduces the
amount of high frequencies in your source video by softening the