Interlacing and field order – Adobe Premiere Pro CS6 User Manual
Page 432
Interlacing and field order
Interlaced video, noninterlaced video, and progressive scanning
About field dominance and field reversal
Create interlaced or non-interlaced clips
Change the field order of a clip
Interlaced video, noninterlaced video, and progressive scanning
Interlaced scanning of interlaced video fields compared with progressive scanning of noninterlaced video frame.
A. For interlaced video, entire upper field (odd-numbered lines) is drawn to screen first, from top to bottom, in one pass. B. Next, entire lower
field (even-numbered lines) is drawn to screen, from top to bottom, in one pass. C. For noninterlaced video, entire frame (all lines in counting
order) is drawn to screen, from top to bottom, in one pass.
Interlacing is a technique developed for transmitting television signals using limited bandwidth. In an interlaced system, only half the number of
horizontal lines for each frame of video are transmitted at a time. Because of the speed of transmission, the afterglow of displays, and the
persistence of vision, the viewer perceives each frame in full resolution. All of the analog television standards use interlacing. Digital television
standards include both interlaced and noninterlaced varieties. Typically, interlaced signals are generated from interlaced scanning, whereas
noninterlaced signals are generated from progressive scanning.
Chris Pirazzi provides technical details of fields and interlacing on
.
Trish and Chris Meyer provide various materials about interlacing, field order, field dominance, field rendering, and separating fields:
article (PDF) introducing interlacing and field separation on the
article introducing interlacing and field order on the
article clarifying meanings of the terms field order and field dominance on the
video overview of fields and interlacing on the
For information about exporting a PsF (progressive segmented frame) video file from Premiere Pro via Adobe Media Encoder,
on the Premiere Pro user-to-user forum.
About field dominance and field reversal
Fields in a clip can become reversed from the state in which they were originally acquired in any of the following ways:
The video capture card used to capture the footage is set to the field dominance opposite that of the source device,
The editing or animation software that last rendered the clip had the field dominance set opposite that of the original clip,
428