lib/sounds.php


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<?php
function compress_sound(string $input_file, string $output_file)
{
    if (!is_file($input_file)) {
        throw new RuntimeException("Sound input file does not exist.");
    }

    $input_file = escapeshellarg($input_file);
    $output_file = escapeshellarg($output_file);

    shell_exec("ffmpeg -i $input_file -c:a libvorbis -q:a 1 $output_file");
}