Apple Final Cut Pro 6 - Manual (Page 1415)

630 Part IV Real Time and Rendering
Multiclip Playback
This option allows you to watch all angles of multiclip play at once in the Viewer while
you switch or cut in real time. When this option is selected and you choose Open from
the Playhead Sync pop-up menu, multiclips in your sequence are automatically opened
in the Viewer, and all angles play back at the same time while the active angle plays in
the Canvas. For more information, see Volume II, Chapter 16, “Working with Multiclips.”
Pulldown Pattern
If your sequence has a frame rate (editing timebase) of 23.98 or 24 fps and you want to
output to an NTSC or PAL device via FireWire, you can choose one of five pull-down
insertion patterns. Pull-down insertion is a method of converting film or other
progressively scanned material to an interlaced format playing at a different frame rate.
For detailed information about pull-down patterns, see Volume IV, Appendix C,
“Working with 24p Video.”
The Pulldown Pattern pop-up menu is available in the Playback Control tab of the
System Settings window. Pull-down options appear in the RT pop-up menu only when
your sequence has a frame rate of 23.98 or 24 fps and Final Cut Pro is currently set up
to output to a DV NTSC or PAL FireWire device. Some options may not be available if
your computer does not have sufficient processing power.
The following three pull-down patterns are available when your sequence has a frame
rate of 23.98 fps and you choose 29.97 fps external video output.
 2:3:2:3: This pattern is the most processor-intensive method of introducing
pull-down but outputs NTSC video with the least noticeable temporal artifacts. For
this reason, 2:3:2:3 pull-down is generally considered to have the most acceptable
quality of motion. This pull-down pattern is also referred to as 3:2 pull-down.
 2:3:3:2: Also known as advanced pull-down. This pattern requires less processing to
output than 2:3:2:3 pull-down because 2:3:3:2 pull-down requires recompression or
regeneration of fewer frames, but the perceived motion quality is lower than when
using 2:3:2:3 pull-down.
 2:2:2:4: This pull-down pattern requires less processing, so it is a good choice if you want
to preview video with as many real-time effects as possible. Keep in mind that if you
choose this pull-down pattern, you won’t be able to easily remove the pull-down later.