User`s guide

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DV – 720x480 video
Digital Video format / DV format is video that is transferred in and out of the computer via a
FireWire (IEEE 1394) interface.
Caption Compatible DV decks: For caption compatible DV decks and media converters, check
the chapter Hardware Requirements.
DV video contains closed captions in its VAUX data area. MacCaption inserts closed captions
directly into this data area. When a closed caption encoded DV video data file is put on video
tape and played back in a VCR, the closed caption information is output directly from the VCR
onto the video signal. Using a laptop computer with an IEEE 1394 / FireWire interface anyone
can add closed captions to DV video material.
Proper QT Movies: To work with CaptionMaker: QT DV video must be 29.97 fps and audio
must be either 32KHz for 4 12-bit audio channels or 48KHz for 2 16 bit audio channels.
There are no exceptions to these rates.
The video must be compressed with DV codec. If the video and audio rates are incorrect, you
can fix it using QuickTime Pro by re-exporting the file with proper video/audio rates.
Lower Limit: When you export a DV movie with closed captions you should specify the
lower limit for the closed caption data. This is necessary due to the way closed captions are
combined with the DV movie.
For example, if you are using pop-on captions and your actual movie content time code starts
at 1:00:00:00 and the first closed caption appears one second into the movie at 1:00:01:00 the
closed caption data is placed into the DV movie before the caption is scheduled to pop on
This issue is extremely important when you caption a commercial spot. If you do not set a
Lower Limit within the actual video content area, you may lose the first caption when the
beginning of the video is edited out later. For more details, check the chapter A Short
Tutorial.
. By
setting Lower Limit to 1:00:00:00 you force MacCaption to begin putting the closed caption
data into movie no earlier than time code 1:00:00:00.
Use the Movie With Closed Captions option under the File Export menu to add closed captions
to video stored in DV format. When processing Digital Video, MacCaption puts closed captions
into a copy of the currently open movie.
After you export the captions to the movie, the Print to Video option under the File menu can be
used to write the movie to a videocassette recorder (VHS, Beta SP, MiniDV, DVCAM, or