7.3 How are film negatives cut to match an edit done on videotape?
Description
This article is from the rec.arts.movies.tech FAQ, by Scott E. Norwood snorwood@nyx.nyx.net with numerous contributions by others.
7.3 How are film negatives cut to match an edit done on videotape?
(information courtesy Martin Gignac martyg@sympatico.ca)
The original film negatives, after processing, are transferred to
videotape, with the film's keycode (barcodes printed on the edge of
the film negative by the manufacturer, and containing the same
information as the visible `edge numbers') encoded on the tape, often
in the Vertical Interval Time Code (VITC) region of the tape.
Non-drop-frame timecode is recorded as well. Visible timecode/keycode
are `burned in' to the picture as well. The tape is synched with the
production sound and is then ready for editing. For non-linear
editing, the pictures and sound from the tape are digitized along with
the timecode and keycode information.
After editing, the an EDL (edit decision list) is created, with the
video non-drop-frmae timecode numbers, along with a keycode number
list. Each cut is then verified and the list is sent along with a
videotape of the edited version and the negatives to the negative
cutter, who then verifies everything again, and produces a cut
negative to match the video version.
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