Flowplayer: streamer php
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This code allows you to stream flv files in a variety of ways.
<?
/*
xmoov-php 0.9
Development version 0.9.3 beta
by: Eric Lorenzo Benjamin jr. webmaster (AT) xmoov (DOT) com
originally inspired by Stefan Richter at flashcomguru.com
bandwidth limiting by Terry streamingflvcom (AT) dedicatedmanagers (DOT) com
Flowplayer compatibility by Rich Bellamy rich (@+) rmbwebs d0t com
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License.
For more information, visit http://creativecommons.org/licenses/by-nc-sa/3.0/
For the full license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode
or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA.
*/
// SCRIPT CONFIGURATION
//------------------------------------------------------------------------------------------
// 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', $_SERVER['DOCUMENT_ROOT']);
// points to the folder containing the video files. Should start and end with '/'
define('XMOOV_PATH_FILES', '/videos/');
//------------------------------------------------------------------------------------------
// SCRIPT BEHAVIOR
//------------------------------------------------------------------------------------------
//set to TRUE to use bandwidth limiting.
define('XMOOV_CONF_LIMIT_BANDWIDTH', TRUE);
//set to FALSE to prohibit caching of video files.
define('XMOOV_CONF_ALLOW_FILE_CACHE', FALSE);
//------------------------------------------------------------------------------------------
// BANDWIDTH SETTINGS
//
// these settings are only needed when using bandwidth limiting.
//
// bandwidth is limited my sending a limited amount of video data(XMOOV_BW_PACKET_SIZE),
// in specified time intervals(XMOOV_BW_PACKET_INTERVAL).
// avoid time intervals over 1.5 seconds for best results.
//
// you can also control bandwidth limiting via http command using your video player.
// the function getBandwidthLimit($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);
define('XMOOV_GET_BANDWIDTH', 'bw');
//------------------------------------------------------------------------------------------
// 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;
}
}
//------------------------------------------------------------------------------------------
// INCOMING GET VARIABLES CONFIGURATION
//
// use these settings to configure how video files, seek position and bandwidth settings are accessed by your player
//
// NOTE TO Flowplayer users: XMOOV_GET_POSITION must be set to 'start' to
// work with Flowplayer, and the other two don't matter
//------------------------------------------------------------------------------------------
define('XMOOV_GET_FILE', 'file');
define('XMOOV_GET_POSITION', 'start');
define('XMOOV_GET_AUTHENTICATION', 'key');
// END SCRIPT CONFIGURATION - do not change anything beyond this point if you do not know what you are doing
//------------------------------------------------------------------------------------------
// PROCESS FILE REQUEST
//------------------------------------------------------------------------------------------
if (isset($_SERVER['PATH_INFO']) || isset($_GET[XMOOV_GET_FILE]))
{
// PROCESS VARIABLES
# get seek position
if (isset($_GET[XMOOV_GET_POSITION])) {
$seekPos = intval($_GET[XMOOV_GET_POSITION]);
} else {
$seekPos = 0;
}
# get file name
if (isset($_SERVER['PATH_INFO'])) {
$fileName = htmlspecialchars(ltrim($_SERVER['PATH_INFO'], "/"));
} else {
$fileName = htmlspecialchars($_GET[XMOOV_GET_FILE]);
}
# assemble file path
$file = XMOOV_PATH_ROOT . XMOOV_PATH_FILES . $fileName;
# 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['SCRIPT_NAME']), $fileName) && ereg('^[^./][^/]*$', $fileName))
{
$fh = fopen($file, 'rb') or die ('<b>ERROR:</b> xmoov-php could not open (' . $fileName . ')');
$fileSize = filesize($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=\"" . $fileName . "\"");
# FLV file format header
if($seekPos != 0)
{
header("Content-Length: " . ($fileSize + 13));
print('FLV');
print(pack('C', 1));
print(pack('C', 1));
print(pack('N', 9));
print(pack('N', 9));
}
else
{
header("Content-Length: " . $fileSize);
}
# seek to requested file position
fseek($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, filesize($file)));
}
}
}
}
?>
I recommend changing:
print(fread($fh, filesize($file)));
to:
while (!feof($fh)) {
print fread($fh, 8192);
}
This keeps it from loading the whole movie into memory (bad for large videos)
Wouldn't just
print(fread($fh, 8192));
be enough, as we are already in a
while (!feof($fh)) {
loop from further up?
Um,
switch($_GET[XMOOV_GET_BANDWIDTH])
looks like you are comparing values of an unchecked input variable
Semicolon world for developing app Syria Aleppo