24 @ 25 pull-down – Apple Cinema Tools 4 User Manual
Page 250
24 @ 25 The most common method of transferring film to PAL video, where the film is
sped up during the telecine transfer to 25 fps. This creates a one-to-one film-to-video
frame relationship, but speeds up the action by 4 percent. See also
24 @ 25 pull-down The Final Cut Pro term for the 24 & 1 method. See also
,
.
24p A high definition video format using a 24 fps rate and progressively scanned video.
It is finding wide use in film production because of its high quality and identical frame
rate. It also converts easily to most 29.97 fps and 25 fps standard and high definition video
formats.
Acmade number See
.
“A” frame The first frame in the repeating five-frame 3:2 pull-down sequence. In two-field
3:2 pull-down video, it is the only frame that fully contains both fields from a single film
frame. B, C, and D frames have their fields split among two video frames. A frames normally
occur on timecode numbers ending with “0” or “5” (when using non-drop frame timecode).
See also
ALE file Abbreviation for Avid Log Exchange. A file format that allows film databases to
be shared between different systems. See also
.
answer print The first film print that includes sound and picture, submitted by the
laboratory for the customer’s approval.
aspect ratio The ratio of an image’s width to its height expressed either as two numbers
(width:height) or as a value equal to the height divided by the width. Standard definition
video uses 4:3 (0.75), and most high definition video uses 16:9 (0.56). Film aspect ratios
depend on the format and lenses used.
change list A list you can export from Final Cut Pro using Cinema Tools, which assumes
a workprint or negative has been cut to the specifications of a cut list (or prior change
list) and specifies further changes to make based on new edits you have made to a
Final Cut Pro sequence.
conform (film) To cut and arrange an original camera negative to match edits made in
a digital editing system. Also, to assemble video or audio according to an Edit Decision
List (EDL). See also
,
.
conform (video) To change the frame rate of a video clip. For example, you can use the
Cinema Tools Conform feature to change the frame rate of a PAL 25 fps video clip to film’s
24 fps rate. You can also conform a clip to its current frame rate, ensuring there are no
frame rate errors within it.
250
Glossary