Perl Graphics Programming

The SWF::Sound Module

The SWF::Sound object allows you to read in an MP3 file that can be played in the background of a movie. Add the sound to a particular frame of the movie with the SWF::Movie::setSoundStream( ) method, as in the following example:

my movie = new SWF::Movie;
my $sound = new SWF::Sound("goldenhair.mp3");   # A 30-second MP3
$movie->setRate(24);

# Make sure we have enough frames to accommodate the sound clip
# 30 seconds * 24 fps = 720 frames

$movie->setFrames(720);
$movie->setSoundStream($sound);

If the movie is shorter than the length of the sound clip, the sound is truncated, so we add enough frames to the movie to accommodate the entire 30 seconds.