Matrox MXO2 PCIe Host Adapter - Manual (Page 295)

271
Specifying your capture format settings
• Matrox MP4 Creates an .mp4 file with embedded stereo AAC audio,
which is suitable for the web and mobile devices. You can choose to
also capture audio to separate
.wav files (PCM audio), and select an
option to simultaneously capture to a Matrox MPEG-2 I-frame .avi file
in the same format as your source video.
• Matrox AVI Creates an MPEG-2 I-frame or uncompressed .avi file.
Audio is embedded in the .avi file and also captured as separate .wav
files (PCM audio).
$
Codec Type If you’re capturing to a Matrox .264 or .mp4 file, the codec
will be set to Matrox MAX H.264 . If you’re capturing to a Matrox .avi
file, select the codec that you want to use for the capture:
• Matrox MPEG-2 I-frame Captures video to MPEG-2 intra-frame
format using the 4:2:2 Profile @ Main Level (for SD resolutions) or
High Level (for HD resolutions) at a selected data rate.
• Matrox 8-bit Uncompressed Captures video to 8-bit
uncompressed format.
• Matrox 10-bit Uncompressed Captures video to 10-bit
uncompressed format.
$
Configure Click this to configure your codec settings (for the Matrox
MAX H.264 and MPEG-2 I-frame codecs only). The Matrox MAX H.264
settings are the same as when you export clips as explained in
“Specifying
your Matrox MAX H.264 settings” on page 258 . The Matrox MPEG-2
I-frame settings are the same as when capturing clips using Adobe
Premiere Pro as explained in
“Selecting your MPEG-2 I-frame settings”
on page 81 .
$
Frame Size Sets the width and height for your captured video. The
available frame sizes depend on your specified file type, codec, and
source video format. When capturing to a Matrox
.264 or . avi file, only
standard SD and/or HD frame sizes are available. When capturing to a
Matrox
.mp4 file, you can select a frame size, or select Custom if you
want to enter a custom size. If you enter an unsupported frame size, the
closest supported frame size will be used.
$
Frame Rate Sets the frame rate for your captured video. When
capturing to a Matrox .264 or .avi file, an appropriate frame rate is
automatically set based on your selected frame size and the frame rate of
your source video. When capturing to a Matrox
.mp4 file, you can select a
frame rate from the list of compatible frame rates. For example, if your
source video is 29.97 fps, you can set the frame rate for your captured
video to 14.98, 29.97, or 59.94. Frame rates of 50 and 59.94, however, are
supported only when the frame size is set to 1280Ч 720.