<?php
/**
* This file is part of the PHP Video Toolkit v2 package.
*
* @author Oliver Lillie (aka buggedcom) <publicmail@buggedcom.co.uk>
* @license Dual licensed under MIT and GPLv2
* @copyright Copyright (c) 2008-2014 Oliver Lillie <http://www.buggedcom.co.uk>
* @package PHPVideoToolkit V2
* @version 2.1.7-beta
* @uses ffmpeg http://ffmpeg.sourceforge.net/
*/
namespace PHPVideoToolkit;
/**
* @access public
* @author Oliver Lillie
* @package default
*/
class VideoFormat_Mp4 extends VideoFormat_H264
{
protected $_post_process_qt_faststart;
protected $_enforce_qt_faststart_success;
public function __construct($input_output_type=Format::OUTPUT, Config $config=null)
{
parent::__construct($input_output_type, $config);
if($input_output_type === 'output')
{
$this->setFormat('mp4')
->setAudioCodec('aac');
}
$this->forceQtFastStartSuccess();
// determine if we are using qtfaststart from the config object.
// remember doing so puts any save into blocking mode so if you are using ProgressHandlerPortable
// you must access the $process->getPortableId() before calling save or saveNonBlocking.
if($this->_config->force_enable_qtfaststart === true)
{
$this->enableQtFastStart();
}
}
public function enableQtFastStart()
{
$this->_post_process_qt_faststart = true;
}
public function disableQtFastStart()
{
$this->_post_process_qt_faststart = false;
}
public function allowQtFastStartFailure()
{
$this->_enforce_qt_faststart_success = false;
}
public function forceQtFastStartSuccess()
{
$this->_enforce_qt_faststart_success = true;
}
public function updateFormatOptions(&$save_path, $overwrite)
{
parent::updateFormatOptions($save_path, $overwrite);
// assign a post process so that qt-faststart (https://ffmpeg.org/trac/ffmpeg/wiki/UbuntuCompilationGuide#qt-faststart) changes the qt atom to allow fast streaming.
if($this->_post_process_qt_faststart === true)
{
$this->_media_object->registerOutputPostProcess(array($this, 'postProcessFastStart'));
}
return $this;
}
/**
* Specifically for creating fast starting files.
* however it can also be used as a standalone function call from the H264Format object.
*
* @access public
* @author Oliver Lillie
* @param Media $media
* @return Media
*/
public function postProcessFastStart(Media $media)
{
// TODO possibly look at setting -movflags faststart options on ffmpeg instead of this.
// set the yamdi input and output options.
$output = $media->getMediaPath();
$temp_output = $output.'.qtfaststart.'.pathinfo($output, PATHINFO_EXTENSION);
// build the qtfaststart process
$qtfaststart_process = new ProcessBuilder('qtfaststart', $this->_config);
$exec = $qtfaststart_process
->add($output)
->add($temp_output)
->getExecBuffer();
// execute the process.
$exec->setBlocking(true)
->execute();
// check for any qt-faststart errors
if($exec->hasError() === true)
{
if(is_file($temp_output) === true)
{
//@unlink($temp_output);
}
if($this->_enforce_qt_faststart_success === true)
{
//@unlink($output);
throw new FfmpegProcessPostProcessException('qt-faststart post processing of "'.$output.'" failed. The output file has been removed. Any additional qt-faststart message follows:
'.$exec->getExecutedCommand().'
'.$exec->getBuffer());
}
// TODO, log or exception not sure as the original file is ok.
}
else
{
// nope everything went ok. so delete ffmpeg file, and then rename yamdi file to that of the original.
unlink($output);
rename($temp_output, $output);
}
return $media;
}
}
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