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Overdriving Audio

If you’ve set the volume of a movie as high as it can go, but it’s still not loud enough, never fear: you can overdrive the audio in a QuickTime movie, increasing the actual sound above the normal maximum sound level. (This is something that you can’t do in QuickTime Player.)

To overdrive a movie’s audio:

  • Hold down the Shift key while you click the Volume Control button.

    The area in which you can move the indicator is now dissected by two black horizontal lines (Figure 5.14).

    Figure 5.14. When you hold down the Shift key while clicking the Volume Control button, you’ll see two black horizontal lines.


  • Drag the indicator anywhere above the bottom black line.

    When you play the movie, the audio level will be higher than the previous audio level.

    The bottom black line represents the normal maximum volume. The top line represents double the normal maximum volume. The top of the area in which you can move the indicator represents three times the normal maximum volume (Figure 5.15).

    Figure 5.15. You can set the volume to up to 300 percent of the normal maximum volume.



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