User`s guide

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To superimpose closed caption data onto an actual video image, follow the instructions described
below for other Avid systems.
Add Captions using Avid Meridien Hardware
Avid Meridien users should use the Meridien QuickTime codec. Select NTSC, Meridien
Interlaced, Odd Field Dominant. To superimpose closed caption data onto an actual video image,
place the AVI movie onto its own video track above your background image. Place a
Blend:Picture-In-Picture effect onto the imported clip and set the Crop Bottom value to -989. Set
the Width and Height scaling to 100%.
On Macintosh Avid systems without real time effects the PIP effect must be rendered and is time
consuming. This can be avoided by the use of the Alpha Mask file as follows. Place your
background clip on V1 and place the Alpha Mask file on V2. Step Into the Alpha Mask clip and
put the imported QuickTime movie onto the Graphic Fill portion, V2, of the Alpha Mask image.
Step Out of the track and play the timeline. You should see a closed caption message
superimposed on the output video image. Using this method you are using closed caption
information located on the first line of the generated image file.