User guide

Using Matrox M.Key/100 with VFW programs

1 Save your project.

2 Quit Adobe Premiere Pro and all other programs.

3 Reconnect M.Key/100 into the same USB port you were using.

4 Restart Adobe Premiere Pro and re-open your project.

Always reconnect M.Key/100 before starting Adobe Premiere Pro. If you

reconnect M.Key/100 after starting Adobe Premiere Pro, your Matrox clips may

appear as “offline” when you re-open your project. If this happens, unplug

M.Key/100 and follow the above steps.

Using Matrox M.Key/100 with VFW programs

When using VFW programs to render material to an .avi file, such as in the case

of a completed video production or an animation, you can use a Matrox codec to

create a Matrox .avi file. For example, you may want to render an animation to

Matrox DV/DVCAM format so that you can record it onto DV tape. You could

also use your VFW program to render video to a Matrox .avi file so that you can

import the file as a realtime clip into your Adobe Premiere Pro projects on

Matrox Axio.

When rendering compositions or animations that have an alpha channel, you can

select a “+ Alpha” Matrox VFW codec to render to a Matrox uncompressed or

MPEG-2 .avi file that includes the alpha-key information. This .avi file will play

back in real time on your Axio system, and will be automatically keyed when you

place the clip in your Adobe Premiere Pro sequence.

¦NoteAlthough Matrox has tested many VFW programs, there may be certain

operational limitations when using Matrox M.Key/100 with some of these

programs (as well as with untested programs).

Before you start rendering

Before you start rendering material to a Matrox .avi file, make the following

settings in your Video for Windows program:

• Set the appropriate frame rate for the video format to which you are

rendering. For example, if you are rendering to PAL format, set the frame

rate to 25 fps.

• Set the frame size of your rendered material to full-screen:

$ 720 × 480 if you are rendering to NTSC or 486p format using the

DV/DVCAM, DVCPRO, DVCPRO50, or MPEG-2 I-frame codec (with or

without alpha).

$ 720 × 576 if you are rendering to PAL or 576p format using the

DV/DVCAM, DVCPRO, DVCPRO50, or MPEG-2 I-frame codec (with or

without alpha).