User`s guide

Table Of Contents
78
Proofing your 708 captions from MPEG-2 streams
You can use MacCaption to proof your HD captions. We have a Print to FireWire function in the
software that will generate and send an MPEG Transport Stream to a standard off-the-shelf HD
TV. The TV will directly decode the HD captions so that you can verify your work. We use a
SHARP AQUOS LC-26D7U TV with FireWire input for this purpose.
HD/SD Captioning using Matrox MXO2
Importing Matrox 4VANC audio file into Final Cut Pro and Print to tape settings
MacCaption can export a special audio only file that contains Matrox 4VANC closed captioning
data for 608/708 TV broadcast standards. In addition, MacCaption can embed the 4VANC audio
channel into a QuickTime movie resulting in a new QuickTime file that contains 8 audio
channels. Both of these output files are wrapped in an MOV container and are able to be read by
the Final Cut Pro timeline. The audio only Matrox 4VANC has the .MOV extension, but in fact
only contains 1 channel of audio data and is read accordingly inside Final Cut Pro.
Once the user imports the MacCaption generated Matrox 4VANC audio file into Final Cut Pro,
the sequence settings must be set to support 8 channels of audio with channels 7 and 8 set to
mono. To set this operation in Final Cut Pro, follow the instructions below:
1. Start a new sequence or select the sequence opened that contains the video that is ready to
be output via the Matrox MXO2.
2. Go to top menu and select Sequence>Settings…
3. Select the “Audio Outputs” tab and change the “Outputs” parameters to 8.
4. Output 7 and 8 should be set to Dual Mono.
5.
6. Press OK.
7. Drag your Matrox 4VANC audio file into any of the audio tracks beneath your video on
the Final Cut Timeline. (Preferably “A8”)