my $ffmpeg = FFmpeg::Command->new('/usr/local/bin/ffmpeg');

##</code><code>##

my $ffmpeg = FFmpeg::Command->new('ffmpeg.exe');

##</code><code>##

my $ffmpeg = FFmpeg::Command->new('C:\\Directory\\Where\\I\\Put\\ffmpeg.exe');

##</code><code>##

# untested!
my $ffmpeg = FFmpeg::Command->new('"C:\\Program Files\\Ffmpeg\\ffmpeg.exe"');