User guide

88
Chapter 9, Using Matrox MXO2 with Supported Programs
Specifying settings for Matrox 4VANC closed
captioning
¦NoteMatrox MXO2 Mini does not support closed captioning.
MXO2 lets you capture and play back video with digital closed captioning using
the Matrox 4VANC tool (see “Matrox 4VANC closed caption capture and
playback” on page 72). This section details the settings for capturing and playing
back Matrox 4VANC closed captioning using Final Cut Pro. You can also use
Final Cut Pro to export a clip with Matrox 4VANC closed captioning to a file for
playback using Final Cut Pro or Matrox Vetura Playback (see Chapter 11, “Using
Matrox Vetura Capture and Vetura Playback”). For more information about any
of the features mentioned in this section, see your Final Cut Pro documentation.
Settings for capturing Matrox 4VANC closed captioning
When capturing using MXO2’s SDI input, MXO2 uses audio track 16 to preserve
the closed caption data from your video’s VANC (vertical ancillary data space).
Prior to capturing, you must enable track 16 in Final Cut Pro as follows:
1 Open Final Cut Pro, and load an MXO2 Easy Setup (see “Loading a Matrox
MXO2 Easy Setup” on page 85).
2 Choose File > Log and Capture.
3 In the Log and Capture window, click the Clip Settings tab.
4 In the audio area of the Clip Settings tab, enable track 16.
¦NoteSee also “Ensuring frame-accurate capture and edit-to-tape” on page 92
for general capture settings for Final Cut Pro.
Settings for playing back Matrox 4VANC closed
captioning
During playback, MXO2 retrieves the closed caption data from the Matrox
4VANC audio track that is assigned to audio output 16 in Final Cut Pro. Set your
playback settings as follows:
1 Open Final Cut Pro, and load an MXO2 Easy Setup (see “Loading a Matrox
MXO2 Easy Setup” on page 85).
2 Choose Sequence > Settings.
3 On the General pane, under Audio Settings, select 48 kHz from the Rate
menu, and
24-bit from the Depth menu.
4 On the Audio Outputs pane, enable 16 channels of audio for your sequence
by selecting
16 from the Outputs menu, set tracks 15 and 16 as Dual
Mono
, and then set the Downmix value to 0 for track 16.
¦NoteAudio track 15 can be used for AFD data (see “Specifying settings
for Matrox 4VANC AFD” on page 90).