Convert directory of avi files to mpg.

convert-avi-mpg.php

<?php
// Usage: php convert-avi-mpg.php nameofdir

$dirName = $argv[1];

//Make sure directory has trailing slash
$dirName = rtrim($dir,"/");

$dir = scandir($dirName);

//remove . and ..
array_shift($dir);
array_shift($dir);

foreach($dir as $infile){
    //Crappy non cool brute force string cleaner as opposed to regex
    $newfile = preg_replace('/\s+/', '_', $infile);     //Make spaces ' ' underscores '_'
    $newfile = str_replace("(","_",$newfile);           //Make parenes '( )' underscores '_'
    $newfile = str_replace(")","_",$newfile);           
    $newfile = str_replace("_-_","-",$newfile);         //Replace '_-_' with just a dash
    $newfile = str_replace("__","_",$newfile);          //Replace '__' with single underscore '_'
    $infile = escapeshellarg($infile);                  
    exec("mv ./{$dirName}/{$infile} ./{$dirName}/{$newfile}");
    
    //Finally do avi to mpg conversion
    $path_parts = pathinfo(./{$dirName}/{$infile});
    $outfile = $path_parts['filename'].".avi";
    $command = "ffmpeg -i ./{$dirName}/{$infile} -f avi -c:v mpeg4 -b:v 4000k -c:a libmp3lame -b:a 320k ./{$dirName}/{$outfile}";
    passthru($command);
}