Xmoov Problem / bug

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Nov. 17, 2009Dan Brinnand

Sorry I have got a problem with xmoov.php. I am sure there is a simple answer.

When it the file first load it streams fine, but if you click on the end of the timeline and then click on an earlier section it brings up the message 'video not found' - despite the fact that it was found on first start.

Any idea why this is happening?

http://www.openlearninghub.co.uk/readme-v2.html

<?php

//------------------------------------------------------------------------------------------
// MEDIA PATH
//------------------------------------------------------------------------------------------
// you can configure these settings to point to video files outside the public html folder.
//
// points to server root
define('XMOOV_PATH_ROOT', '/home/openlear/public_html/');
//
// points to the folder containing the video files.
define('XMOOV_PATH_FILES', './');

//------------------------------------------------------------------------------------------
// BEHAVIOR
//------------------------------------------------------------------------------------------
//
//set to TRUE to use bandwidth limiting.
define('XMOOV_CONF_LIMIT_BANDWIDTH', FALSE);
//
//set to FALSE to prohibit caching of video files.
define('XMOOV_CONF_ALLOW_FILE_CACHE', TRUE);

//------------------------------------------------------------------------------------------
// BANDWIDTH SETTINGS
//------------------------------------------------------------------------------------------
// these settings are only needed when using bandwidth limiting.
//
// bandwidth is limited my sending a limited amount of video data (XMOOV_BW_PACKET_SIZE),
// in specified time intervals (XMOOV_BW_PACKET_INTERVAL).
// avoid time intervals over 1.5 seconds for best results.
//
// you can also control bandwidth limiting via http command using your video player.
// the function getBandwidthLimit($part) holds three preconfigured presets(low, mid, high),
// which can be changed to meet your needs
//
//set how many kilobytes will be sent per time interval
define('XMOOV_BW_PACKET_SIZE', 90);
//
//set the time interval in which data packets will be sent in seconds.
define('XMOOV_BW_PACKET_INTERVAL', 0.3);
//
//set to TRUE to control bandwidth externally via http.
define('XMOOV_CONF_ALLOW_DYNAMIC_BANDWIDTH', TRUE);

//------------------------------------------------------------------------------------------
// INCOMING GET VARIABLES CONFIGURATION
//------------------------------------------------------------------------------------------
//
// use these settings to configure how video files, seek position and bandwidth settings are
// accessed by your player
//
define('XMOOV_GET_FILE', 'file');
// define('XMOOV_GET_POSITION', 'pos'); // v3.x player
define('XMOOV_GET_POSITION', 'start'); // v4.x player
define('XMOOV_GET_AUTHENTICATION', 'key');
define('XMOOV_GET_BANDWIDTH', 'bw');

///////////////////////////////////////////////////////////////////////////////////////////////////////////////
// END SCRIPT CONFIGURATION - do not change anything beyond this point if you do not know what you are doing //
///////////////////////////////////////////////////////////////////////////////////////////////////////////////

//------------------------------------------------------------------------------------------
// PROCESS FILE REQUEST
//------------------------------------------------------------------------------------------

if(isset($_GET[XMOOV_GET_FILE]))
{
// PROCESS VARIABLES
// get seek position

//...Will - 07-31-08 JWMP doesn't send start on the first request
$seekPos = isset($_GET[XMOOV_GET_POSITION]) ? intval($_GET[XMOOV_GET_POSITION]) : 0;
// get file name
$fileName = htmlspecialchars($_GET[XMOOV_GET_FILE]);

// assemble file path
$file = XMOOV_PATH_ROOT . XMOOV_PATH_FILES . $fileName;

//...debug
//print "File Path: $file"; exit;

// assemble packet interval
$packet_interval = (XMOOV_CONF_ALLOW_DYNAMIC_BANDWIDTH && isset($_GET[XMOOV_GET_BANDWIDTH])) ? getBandwidthLimit('interval') : XMOOV_BW_PACKET_INTERVAL;
// assemble packet size
$packet_size = ((XMOOV_CONF_ALLOW_DYNAMIC_BANDWIDTH && isset($_GET[XMOOV_GET_BANDWIDTH])) ? getBandwidthLimit('size') : XMOOV_BW_PACKET_SIZE) * 1042;

// security improved by by TRUI www.trui.net
if (!file_exists($file))
{
print('<b>ERROR:</b> xmoov-php could not find (' . $file . ') please check your settings.');
exit();
}

if(file_exists($file) && strrchr($fileName, '.') == '.flv' && strlen($fileName) > 2 && !eregi(basename($_SERVER['PHP_SELF']), $fileName) && ereg('^[^./][^/]*$', $fileName))
{
$fh = fopen($file, 'rb') or die ('<b>ERROR:</b> xmoov-php could not open (' . $file . ')');

$fileSize = filesize($file) - (($seekPos > 0) ? $seekPos + 1 : 0);

// SEND HEADERS
if(!XMOOV_CONF_ALLOW_FILE_CACHE)
{
// prohibit caching (different methods for different clients)
session_cache_limiter("nocache");
header("Expires: Thu, 19 Nov 1981 08:52:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0");
header("Pragma: no-cache");
}

// content headers
header("Content-Type: video/x-flv");
// header("Content-Disposition: attachment; filename=\"" . $fileName . "\"");
header("Content-Length: " . $fileSize);

// FLV file format header
if($seekPos > 0)
{
print('FLV');
print(pack('C', 1));
print(pack('C', 1));
print(pack('N', 9));
print(pack('N', 9));
}

// seek to requested file position
fseek($fh, $seekPos);

// output file
while(!feof($fh))
{
// use bandwidth limiting - by Terry
if(XMOOV_CONF_LIMIT_BANDWIDTH)
{
// get start time
list($usec, $sec) = explode(' ', microtime());
$time_start = ((float)$usec + (float)$sec);
// output packet
print(fread($fh, $packet_size));
// get end time
list($usec, $sec) = explode(' ', microtime());
$time_stop = ((float)$usec + (float)$sec);
// wait if output is slower than $packet_interval
$time_difference = $time_stop - $time_start;
if($time_difference < (float)$packet_interval)
{
usleep((float)$packet_interval * 1000000 - (float)$time_difference * 1000000);
}
}
else
{
// output file without bandwidth limiting
print(fread($fh, 16384));
}
}
}
}

//------------------------------------------------------------------------------------------
// DYNAMIC BANDWIDTH CONTROL
//------------------------------------------------------------------------------------------
//
function getBandwidthLimit($part)
{
switch($part)
{
case 'interval' :
switch($_GET[XMOOV_GET_BANDWIDTH])
{
case 'low' :
return 1;
break;
case 'mid' :
return 0.5;
break;
case 'high' :
return 0.3;
break;
default :
return XMOOV_BW_PACKET_INTERVAL;
break;
}
break;

case 'size' :
switch($_GET[XMOOV_GET_BANDWIDTH])
{
case 'low' :
return 10;
break;
case 'mid' :
return 40;
break;
case 'high' :
return 90;
break;
default :
return XMOOV_BW_PACKET_SIZE;
break;
}
break;
}
}

?>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>

<head>

<title> Your Title Here </title>

<script src="swfobject.js"></script>

<meta name="Generator" content="Alleycode HTML Editor">
<meta name="Description" content="Your description here...">
<meta name="Keywords" content="Your keywords here...">

</head>

<body>

<div id="mediaspace">This text will be replaced</div>



<script type="text/javascript">
var so = new SWFObject('http://www.openlearninghub.co.uk/player.swf', 'mpl', '470', '320', '9.0.124');
so.addParam('allowscriptaccess', 'always');
so.addParam('allowfullscreen', 'true');
so.addVariable('streamer', 'http://www.openlearninghub.co.uk/xmoov.php');
so.addVariable('file', 'video.flv');
so.addVariable('type', 'http');
so.addVariable('http.startparam', 'start');
so.addVariable('start', '0');
so.write('mediaspace');
</script>
</body>

</html>

Regards

Dan Brinnand

Open Learning Hub

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