Apple QuickTime Guide de l'utilisateur télécharger pdf (Page 24)

24 Chapter 3 Making and Editing QuickTime Movies With QuickTime Pro

Changing Instruments Used in a MIDI Track

Some QuickTime movies have a music track that contains Musical Instrument Digital

Interface (MIDI) information. This information tells the built-in QuickTime synthesizer

how to play the music in the track.

If you have QuickTime Pro, you can change the instruments used to play back the

music in the movie. For example, you could change an acoustic grand piano to an

electric piano.

To switch MIDI instruments:

1 In QuickTime Player, choose Movie > Get Movie Properties.

2 Choose the MIDI music track from the left pop-up menu, then choose Instruments from

the right pop-up menu.

3 Double-click an instrument in the list.

Working With Text Tracks

You can add text to a QuickTime movie to create titles, credits, and subtitles.

With QuickTime Pro, text tracks are searchable, so you can search for key words to find

precise frames in the movie.

See the following sections for details on adding text tracks. For more information, see

the developer section of the QuickTime website at www.apple.com/quicktime.

Adding a Text Track to a QuickTime Movie

If you have QuickTime Pro, you can import a text file into a QuickTime movie.

To add a text track:

1 Create a text file containing the text you want in the movie, and save the file as text

only (.txt).

Separate each paragraph with a Return character. Each paragraph appears in a separate

frame of the movie. By default, each text frame is displayed for 2 seconds.

2 In QuickTime Player, choose File > Import and select the text file.

3 Click Open.

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Apple QuickTime Guide de l'utilisateur Page 24