User guide

260
Appendix B, Matrox Axio Workflows
• Matrox 8-bit and 10-bit Uncompressed HD codecs Capture and export
video to full-resolution, finishing-quality HD video for online editing
projects. The Matrox VFW Uncompressed HD codecs allow you to render
material to full-resolution, finishing-quality HD video for use with Matrox
Axio using VFW applications, such as Adobe After Effects. For an example
of a workflow that uses the Matrox 8-bit or 10-bit Uncompressed HD codec,
see “Using the Matrox 8-bit and 10-bit Uncompressed HD codecs” on
page 269.
• Matrox DVCPRO HD codec Captures and exports video to
full-resolution, finishing-quality DVCPRO HD format for online editing
projects. This codec is supported only for 1080i and 720p projects (in 1080p
projects, DVCPRO HD clips are supported for playback only). The Matrox
VFW DVCPRO HD codec lets you render material to DVCPRO HD format
using VFW applications, such as Adobe After Effects. This codec can be
used only on a system that has Matrox Axio hardware installed.
¦NoteThe Matrox VFW MPEG-2 I-frame and Uncompressed codecs are also
available in “+ Alpha” versions that let you render compositions to an .avi file
that includes the alpha-key information. For details, see Chapter 10, “Using
Matrox Axio with Video for Windows Programs.”
Using the Matrox Offline HD codec
The Matrox Offline HD codec allows you to capture HD video at a low resolution
and at a low data rate (less than 7 Mb/sec) for use in your Premiere Pro projects.
When you use these clips on your Matrox Axio system, they are scaled to
full-screen size for previewing on your HD monitor or when they are exported to
tape. On a system without Matrox Axio hardware, the offline HD clips appear as
low-resolution clips. Matrox offline HD clips and full-resolution HD clips can be
combined on the same timeline.
You can use the Matrox Offline HD codec to capture material that will be used on
a remote editing station, such as a laptop computer, where large storage devices
may not be available or as convenient. In this case, you capture HD clips with
your Matrox Axio system using the Matrox Offline HD codec, and then transfer
the low-resolution clips to your remote editing station. Once the HD project is
complete, you can copy the Premiere Pro project file to your Axio system and
recapture only the clips you use in your project at full HD resolution.
Creating your offline edit
To create an offline edit of your HD project, you must use your Matrox Axio
system to capture your HD material at low resolution using the Matrox Offline
HD codec. If you plan to use a remote editing workstation, such as a laptop
computer, you must also transfer the clips you’ve captured using the Offline HD
codec to a hard drive that you’ll be using with your remote editing system.
Axio Installation and User Guide.book Page 260 Monday, July 14, 2008 8:00 AM