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Chapter 9. Video and MPEG Tracks > Creating MPEG Tracks from MPEG Files

Creating MPEG Tracks from MPEG Files

MPEG (which stands for Motion Picture Experts Group) is a commonly used video and audio standard. Apple’s QuickTime MPEG extension lets you import MPEG-1 data into a QuickTime movie. Rather than going into a standard video track, however, the data goes into a special MPEG track that contains both audio and video.

To create an MPEG track from an MPEG file:

1.
From the File menu, choose Open Movie or Open Movie in New Player (Figure 9.25).

Figure 9.25. You can open an MPEG-1 file in QuickTime Player by choosing File > Open Movie.


2.
Select the MPEG file that you want to open, and click Convert (Mac OS 9 and Windows; Figure 9.26) or Open (Mac OS X).

Figure 9.26. When you select an MPEG-1 file, the Open button changes to the Convert button. Click Convert to open the file.


Windows users may need to switch the setting in the Files of Type pop-up menu to MPEG Files.

You open this file the way you open any other QuickTime movie. When you check the movie composition in the Movie Info window, however, you’ll see that it has a single track. For MPEG files that contain both audio and video, this track is an MPEG1 Muxed track (Figure 9.27). For MPEG files that contain only video, this track is an MPEG1 Video track.

Figure 9.27. When you open an MPEG-1 file in QuickTime Player, you create a single MPEG track, even if the file also contains audio.



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