User guide

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Appendix B, Matrox Axio Workflows
Applying pulldown in HD projects
Depending on your HD project settings, Matrox Axio applies a pulldown method
so that you can capture an HD video format (input format) that is different from
your project’s format. For example, when working in a 1080p @ 23.98 fps
project, you can capture 1080i @ 29.97 fps source video and use it in your 1080p
@ 23.98 project as long as the material was originally acquired at 23.98 fps or
24 fps. This includes film footage that was shot at 24 fps, then transferred to tape
as 1080i @ 29.97 fps using a telecine process. In this case, Matrox Axio
performs a standard reverse pulldown when it captures 1080i @ 29.97 fps
material for use in a 1080p @ 23.98 fps project.
Matrox Axio also supports various HD clips recorded directly to disk as .mxf or
.mp4 files. When needed, Matrox Axio will perform the appropriate pulldown
when the files are played back on the timeline. For example, if you import
Panasonic P2 1080/24pA .mxf files to a Matrox Axio 1080p @ 23.98 fps project,
Axio will perform an advanced reverse pulldown when the files are played back.
You can output your completed 1080p @ 23.98 fps project to 1080p @ 23.98 fps,
1080i @ 29.97 fps, or NTSC format. To output the project as 1080i @ 29.97 fps
or NTSC, a standard 2:3 pulldown is performed to convert your video to the
appropriate format.
Remarks
• Material shot by an HD video camera at 1080i @ 29.97 fps (non-telecined
material) is not suitable for use in a 1080p @ 23.98 fps project. Instead, use
a 1080i @ 29.97 fps project for working with this material.
• When using a Panasonic P2 camera to shoot 1080p @ 23.98 fps material for
use with Matrox Axio, you must set the camera to Advanced mode
(1080/24pA).
• If you want to capture and edit HDV 1080p @ 23.98 fps clips, you can create
a 1440×1080p @ 23.98 fps project, which supports capturing native HDV
material over the 1394 interface only. You can output your completed
1440×1080p @ 23.98 fps project to 1080p @ 23.98 fps, 1080i @ 29.97 fps,
or NTSC format. To output the project as 1080i @ 29.97 fps or NTSC, a
standard 2:3 pulldown is performed to convert your video to the appropriate
format.
• When using a Sony HVR-V1 camera to shoot HDV 1080p @ 23.98 fps
material that you’ll be capturing on Matrox Axio, you must set the camera to
Advanced mode (24A).
Axio Installation and User Guide.book Page 272 Monday, July 14, 2008 8:00 AM