User Manual-Mac

Specifying your A/V input settings

3 Select Use external genlock source (REF) if you connected an external

analog genlock source to MXO2’s REF/REF IN connector, such as a

bi-level analog black burst for SD or a tri-level sync for HD. If you don’t

have an external genlock source connected to MXO2, clear this option to

genlock to MXO2’s internal reference signal during playback, and genlock

to your capture source during capture (see “Specifying your A/V input

settings” on page 57).

Remarks

$ When capturing RGB material from a DVI source using MXO2’s HDMI

input, you must use an external genlock source.

$ When capturing video with digital closed captioning (see “Matrox

4VANC capture and playback” on page 68), you must genlock to your

capture source and not an external genlock source. Clear this option to

genlock to your capture source.

To indicate whether or not MXO2 is presently locked to your external

genlock source, the status will be displayed next to the

Genlock format

menu as

Locked or Not locked.

4 From the Genlock format menu, select the video format of your external

genlock source.

¡ Important To ensure good output results, make sure that your genlock

source’s video format is compatible with the MXO2 video output format.

5 Use the horizontal and vertical settings under Video Output Timing Offset

to adjust the timing of the video output relative to your external genlock

source. This lets you compensate for cable delays within your system.

Specifying your A/V input settings

You can select the MXO2 video and audio inputs to be used as your capture

source. Only one video and audio input source can be used at a time. You can

also capture your video to a different format than your source video by enabling

scaling on the input.

¦NoteWhen capturing, MXO2 outputs your source video at the capture format.

The Matrox video output settings are ignored during capture.

For descriptions of the MXO2 inputs, see “Inputs” on page 160. For a list of the

input and capture formats that are supported on MXO2, and to view the MXO2

input scaling options, see Appendix C, “Matrox MXO2 Supported Input and

Capture Formats.”

¦NoteThe HDMI video input does not support SD video for capture. When

capturing RGB material from a DVI source using MXO2’s HDMI input, you

must use an external genlock source (see “Specifying your genlock settings” on

page 56).