Instruction manual

HDE-3000 - 41 -
5.3.2 Timecode Offset Menu
HDE-3000 contains an internal time code reader. When an off-line closed caption or
subtitle job is ran, captions or subtitles are processed when time code read from the LTC
input port or ATC matches time code from the caption or subtitle file. The timing for caption
or subtitle files is established from the time code provided to the caption agency. But when
a job is run, the time code accompanying the program video may have changed. The time
code offset menu lets you adjust time code read by the internal time code reader in
increments of +/- 1 frame. The time code offset is added to the time read by the internal
LTC reader. The time code displayed in the on-screen menu reflects the sum of incoming
time code and the offset.
5.3.3 Time Code Override Menu
In HD encoding sessions, there is a chance for a time code mismatch which occurs
when the frame rate of the time code does not match the frame rate of the video. Typically,
time code is always synchronized to the video, but it is possible to “stripe” a tape with time
code that is not synchronized to the video. Normally, the HDE-3000 assumes that the time
code is synchronized to the video, but the override menu allows the user to specify the
frame rate of the time code if it is different than the frame rate of the video.
For example, suppose an HD tape containing a movie in 1080PsF/24 format must be
captioned using an authoring system that must use NTSC (29.97) time code. It is possible
to stripe the tape with NTSC time code and author the captions to these time codes. For the
HDE-3000 to encode these captions properly, the time code override menu must be used to
tell the HDE-3000 that the time code is 29.97 FPS instead of 24 FPS.