User Manual-Mac

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Chapter 7, Configuring Your MXO2 System
5 Specify the appropriate settings in your video application.
Matrox 4VANC capture and playback
The Matrox 4VANC tool lets you capture and play back AFD (active format
description) and digital closed caption data, along with your video, using audio
tracks 15 and 16, respectively. This section describes Matrox 4VANC, as it
applies to AFD and closed captioning, and details how to enable these features on
MXO2.
AFD capture and playback
If you have an SDI video source that contains AFD (active format description)
data in the VANC (vertical ancillary data space), Matrox 4VANC lets you
preserve the data during capture, maintain the data during playback and export to
disk, and restore the data during output. When using a supported video
application, Matrox 4VANC captures the AFD data as an audio track using
MXO2’s SDI input, along with the video. The Matrox 4VANC audio track that
contains the AFD data can then be used in a supported video application to play
back the AFD data through MXO2’s SDI output.
Matrox 4VANC preserves the SDI VANC AFD data during capture by encoding
the data into the audio stream using audio track 15. The resulting file is an
uncompressed 24-bit 48 kHz audio file that contains the AFD data. When using
MXO2’s SDI input for capture, you can choose to use audio track 15 to preserve
the AFD data that is in your source video’s VANC. Because audio track 15 is
used for capturing AFD data, that channel will not be available for capturing
audio.
When using MXO2’s SDI output for playback, you can choose to retrieve and
output the Matrox 4VANC AFD data from your video application. The AFD data
is retrieved from audio track 15 and output using MXO2’s SDI output. The AFD
data is restored to your HD/SD video’s VANC on output. When Matrox 4VANC
is being used, track 15 is muted during playback, therefore it will not be available
for playing back audio.
The follwing steps describe how to enable Matrox 4VANC AFD for capture and
playback on MXO2: