User`s guide

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Video non-linear editing systems from different vendors require specific set up values to
generate proper closed-caption image data files. The NLE Tab is used for setting these specific
values. The information in the NLE Tab is not used when MacCaption adds closed captions to
Digital Video.
The "NLE Values set to" pull down menu contains specific presets for various NLE hardware
systems. Select AJA Io LA for AJA Io LA hardware, select Avid ABVB when using an Avid
Media Composer with the ABVB hardware board set, select Avid DS for an Avid DS system,
select Avid Meridien for an Avid NLE with the Meridien hardware board set, select Blackmagic
DeckLink Extreme or Media 100, etc. This operation only has to be done once.
MacCaption can be configured for additional NLE systems by directly modifying the Primary
Row and Starting Column data fields in this Tab. The "Set current values as 'My NLE'" button
copies the current NLE setting into 'My NLE' setting where they can be modified.
Primary Row is the row number where field 1 data will be placed. Field 2 data will be put on
Primary Row + 1. The Primary Row data value must be between 0 and 484 inclusive for NTSC
(0 and 574 for PAL).
Starting Column is the column offset for the center point of the first closed-caption clock run-in
bit. The Starting Column data value must be between 14 and 39 inclusive.
Small QuickTime allows the generation of QuickTime data files that reuse a previously
compressed image frame. For example, the QuickTime frame corresponding to the closed-
caption binary values of 0, 0 occurs fairly often in a closed-caption QuickTime movie. With
Small QuickTime selected, when a second 0, 0 frame is about to be compressed a pointer is built
into the QuickTime file that references the previously compressed 0, 0 image frame. The use of
the previously compressed image frame saves both the time needed to compress the image as
well as the space needed to store it. A QuickTime movie file created in this manner is
significantly smaller in size than one created without this option, however, not all non-linear
General I/O Display
NLE
Remote
Primary Row (0-484) 1_
Starting Column (14-39) 24
• Small QuickTime
• Use 0 IRE YCrCb levels for 4:2:2 video
NLE Values set to My NLE
Set current values as ‘My NLE’