Apple Logic Pro X - Manual (Page 837)

Chapter 24 Video and synchronization 837
4 Enter a name and target folder for the movie, then click Save.
A bounce or write dialog appears. The movie is exported to the selected folder, and contains all
selected audio tracks, as well as the part of your project that is encompassed by the start and
end points of the movie.
Create and edit soundtracks
Soundtracks overview
Creating a new video soundtrack is similar to working with any Logic Pro X project. You can
import or record audio and instrument parts, arrange them, process them with effects, and mix
your music, dialogue, and sound effects (known as Foley) in stereo or a surround format.
You can also import an existing movie soundtrack, edit or enhance it in Logic Pro X, and then
export your audio back to the movie file. See
Use movie audio tracks .
The key difference when working with video or film is the need for synchronicity between what
is seen and what is heard. Logic Pro X supports several synchronization protocols that let you
work with video at all standard frame rates. See
Synchronization overview .
You can use video files stored on a locally attached or networked hard drive, or work with
synchronized external video or film editing and playback hardware.
Working with disk-based video is preferable because you can see the video in Logic Pro X and
don’t have to wait for hardware to “catch up” when moving from one scene to another. The
imported video and Logic Pro X are “frame-locked” when you move through your project or
video with either the Logic Pro X or QuickTime transport and navigation controls. See
Add a
movie to your project .
QuickTime video is embedded with an internal SMPTE (Society of Motion Picture and Television
Engineers) timecode. SMPTE timecode is an absolute timecode that covers a 24-hour period. It
displays hours, minutes, seconds, frames, and subframes. Logic Pro X recognizes SMPTE timecode
and converts it to MTC (MIDI Time Code). MTC is the MIDI equivalent of SMPTE timecode.
Different video frame rates are automatically interpreted by Logic Pro X. See
MTC interpretation .
Work with absolute time code
The production process for video, film, or TV commercials is different from music production.
Synchronization is always used, unlike in music production, where it is not always required. You
need to work in absolute time: hours, minutes, seconds, and frames, rather than in bars and
beats. Edits to the video, including changes to scene length, additional cuts, the use of slow
or fast motion, and dialogue changes (or “redos”) are among the many situations that you will
encounter when creating or editing a soundtrack.
The Event List is ideal for precise placement of timing-critical events such as footsteps or
dialogue in a video soundtrack. It also allows you to change event lengths, which is useful if
frames are removed during the video editing phase of production. In linear editing windows, the
ruler can display absolute (SMPTE) time or bars and beats (or both).
When working with synchronized video, you will want music, sound effects, and dialogue to play
at a specific time, rather than at a particular bar position.
If the tempo of your soundtrack needs to be altered at a later stage, the absolute time location
of events that have already been positioned will change. The Lock SMPTE Position function
prevents this from happening. You can SMPTE-lock individual events in the Event List or entire
regions. All events inside locked regions are SMPTE-locked.