Sound for Moving Image Practical Notes - Exporting Audio to Movies PDF

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Summary

The PDF contains notes which provide specific instructions on how to export Media and Audio to Movies or Clips, using Apple's Logic Pro X Software.
The Lecture was lead by Dr. Andrew Dolphin
Term 1 2017/2018
University of Portsmouth ...

Description

Practical:

How To Export Audio to Movies in Logic Pro X

Use movie audio tracks

Once a movie has been opened in a project, you can use the Import Audio from Movie or Export Audio to Movie command, found in the File menu. After the audio has been imported, you can change the video dialogue, Foley, and music with Logic Pro X audio processing and editing features. You can export audio from the part of your project that is encompassed by the movie to the movie file itself, effectively overwriting the original movie soundtrack. This is useful for sending a preliminary mix of your soundtrack to other members of the production team, for example.

You can adjust the audio level and output device in the Video project settings. See Movie settings on page 911. Import audio from a QuickTime movie into your project 1 Select the audio track or tracks you want to use. 2 Do one of the following: • Choose File > Movie > Import Audio from Movie (or use the corresponding key command).

• Control-click

anywhere in the Movie track, then choose Import Audio from Movie from the shortcut menu.

3 Click the required checkboxes in the dialog, then click OK. The selected audio tracks are bounced to one or more audio files, and placed in the Project Audio Browser. A new audio track is created for each movie audio track (when “On separate tracks” is chosen in the dialog), and the imported audio from the movie is added to the track (or tracks). The movie name is retained and used for the resulting audio file (or files).

Export your project audio to a QuickTime movie 1 Do one of the following: Choose File > Movie > Export Audio to Movie (or use the corresponding key command).

Control-click anywhere in the Movie track, then choose Import Audio from Movie from the shortcut menu. 2 .In the dialog, choose a preset format from the Presets pop-up menu. 3. Click the Advanced button to specify the Audio Format, Sample Rate, and Bit Depth from the respective pop-up menus.

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.

Chapter 24    Video and synchronization

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