convert_wma_to_mp3.php

<?php

$before_ext = '.wma';
$after_ext = '.mp3';
$bitrate = 192;
$ffmpeg = '/usr/bin/env ffmpeg';

$pattern = '*' . $before_ext;
$files = glob($pattern);
foreach ($files as $file) {
    $after = str_replace($before_ext, $after_ext, $file);
    $command = sprintf(
        '%s -y -i %s -b:a %dk %s',
        $ffmpeg,
        escapeshellarg($file),
        $bitrate,
        escapeshellarg($after)
    );
    exec($command, $output, $return_var);
    if (0 !== $return_var) {
        echo $command;
        print_r($output);
        exit(1);
    }
}

Requirement

• PHP5
• FFMpeg

Usage

cd /path/to/wma_files
php convert_wma_to_mp3.php