PHP script to auto generate video previews for video files from 5D

gistfile1.txt

<?php

// run this script from command line e.g.
// php compress.php > videos.html

// I really DO NOT suggest you try and load this php url in your browser

$nVideos = 0;

//these 2 variables are used to render an absolute path
//this is important for the the flash flv player

//the base url
$base_url = "http://www.kimchiandchips.com/";

//the path on your server where the base url points to
//we presume that the flv's are somewhere beneath this path
$base_path = "/home/kimchiandchips/kimchiandchips/";

traverse(".");

function traverse($path) {

	echo("<h1>$path</h1>\n");
	
	global $allhtml, $thishtml;
	$d = dir($path);
	
	while (false !== ($entry = $d->read())) {
		$fullpath = $path . "/" . $entry;
		
		if (substr($fullpath,-1) == ".")
			continue;
		
		if (is_dir($fullpath))
			traverse($fullpath);
		
		if (substr($fullpath, -4) == ".MOV")
			compress($fullpath);
		
		
	}

	$d->close();	
}

function compress ($path) {
	global $nVideos;
	
	$mov = $path;
	$flv = substr($path, 0, -3) . "flv";
	$jpg = substr($path, 0, -3) . "jpg";
	shell_exec("ffmpeg -threads 1 -y -i \"" . $mov . "\" -s 1280x720 -f flv -vcodec flv -b 2000000 -ab 128000 -ar 44100 \"" . $flv  . "\"");
	
	$size = 0;
	$offset = 2.0;
	$runtimes = 0;
	while ($size == 0 && $runtimes < 5) {
		$command = sprintf("ffmpeg -threads 1 -y -itsoffset -%.1f  -i \"" . $mov . "\" -vcodec mjpeg -vframes 1 -s 480x270 \"" . $jpg . "\"", $offset);
		shell_exec($command);
		$size = filesize($jpg);
		$offset /= 2.0;
		$runtimes++;
	}
	
	$nVideos++;
	
	?>
	
	<h2><? echo $mov; ?></h2>
	<div id="v<? echo $nVideos; ?>">
	<a href="http://www.macromedia.com/go/getflashplayer">Get the Flash Player</a> to see this video.
	</div>
	<script type="text/javascript" src="https://media.dreamhost.com/mp4/swfobject.js"></script>
	<script type="text/javascript">
	var swf = new SWFObject("https://media.dreamhost.com/mp4/player.swf", "mpl", "480", "270", 8);
	swf.addParam("allowfullscreen", "true");
	swf.addParam("allowscriptaccess", "always");
	swf.addVariable("file", "<? echo getUrl($flv); ?>");
	swf.addVariable("image", "<? echo $jpg ?>");
	swf.write("v<? echo $nVideos; ?>");
	</script>
	<a href="<? echo $mov; ?>">Original</a>
	<a href="<? echo $flv; ?>">FLV</a>
	<br />
	
	
	<?
}

function getUrl($path) {
	global $base_path, $base_url;
	
	$real = realpath($path);
	$url = str_replace($base_path, $base_url, $real);
	//$url = str_replace(" ", "%20", $url);
	
	return $url;
}
?>