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  Classes of Oliver Lillie  >  PHP Video Toolkit  >  examples/example02.php  >  Download  
File: examples/example02.php
Role: Example script
Content type: text/plain
Description: Screen grabs video frames.
Class: PHP Video Toolkit
Manipulate and convert videos with ffmpeg program
Author: By
Last change: Updated for version 0.1.5
Date: 7 years ago
Size: 5,791 bytes
 

Contents

Class file image Download
<?php

   
/* SVN FILE: $Id$ */
   
    /**
     * @author Oliver Lillie (aka buggedcom) <publicmail@buggedcom.co.uk>
     * @package PHPVideoToolkit
     * @license BSD
     * @copyright Copyright (c) 2008 Oliver Lillie <http://www.buggedcom.co.uk>
     * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
     * files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,
     * modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software
     * is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be
     * included in all copies or substantial portions of the Software.
     *
     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
     * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
     * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     */

   
echo '<html><head></head><body>';
    echo
'<a style="font-size:12px;" href="index.php#examples">&larr; Back to examples list</a><br /><br />';
    echo
'<strong>This example shows you how to extract frames from a movie.</strong><br />';
   
// load the examples configuration
   
require_once 'example-config.php';
   
// require the library
   
require_once '../phpvideotoolkit.'.$use_version.'.php';
   
    echo
'<strong>Note; </strong>This example should work correctly, however it\'s not. I don\'t currently understand why it\'s not producing the expected thumbnails. I\'m currently looking into it and the xample will be updated when this process is fixed.<br /><br />';
   
// temp directory
   
$tmp_dir = PHPVIDEOTOOLKIT_EXAMPLE_ABSOLUTE_BATH.'tmp/';
   
// input movie files
   
$files_to_process = array(
       
PHPVIDEOTOOLKIT_EXAMPLE_ABSOLUTE_BATH.'to-be-processed/MOV00007.3gp',
       
PHPVIDEOTOOLKIT_EXAMPLE_ABSOLUTE_BATH.'to-be-processed/Video000.3gp',
       
PHPVIDEOTOOLKIT_EXAMPLE_ABSOLUTE_BATH.'to-be-processed/cat.mpeg'
   
);

// output files dirname has to exist
   
$thumbnail_output_dir = PHPVIDEOTOOLKIT_EXAMPLE_ABSOLUTE_BATH.'processed/thumbnails/';
   
// log dir
   
$log_dir = PHPVIDEOTOOLKIT_EXAMPLE_ABSOLUTE_BATH.'logs/';
   
// start PHPVideoToolkit class
   
$toolkit = new PHPVideoToolkit($tmp_dir);
   
// set PHPVideoToolkit class to run silently
   
$toolkit->on_error_die = FALSE;
   
// the number of frames to extract per second
   
$extraction_frame_rate = 5;
   
// start the timer collection
   
$total_process_time = 0;
   
// loop through the files to process
   
foreach($files_to_process as $key=>$file)
    {
// get the filename parts
       
$filename = basename($file);
       
$filename_minus_ext = substr($filename, 0, strrpos($filename, '.'));
        echo
'<strong>Extracting '.$filename.'</strong><br />';
       
// set the input file
       
$ok = $toolkit->setInputFile($file, $extraction_frame_rate);
// check the return value in-case of error
       
if(!$ok)
        {
// if there was an error then get it
           
echo '<b>'.$toolkit->getLastError()."</b><br />\r\n";
           
$toolkit->reset();
            continue;
        }
       
// set the output dimensions
       
$toolkit->setVideoOutputDimensions(160, 120);
       
// extract thumbnails from the third second of the video, but we only want to limit the number of frames to 10
       
$info = $toolkit->getFileInfo();
        echo
'We are extracting frames at a rate of '.$extraction_frame_rate.'/second so for this file we should have '.ceil($info['duration']['seconds']*$extraction_frame_rate).' frames below.<br />';
       
$toolkit->extractFrames('00:00:00', false, $extraction_frame_rate, false, '%hh:%mm:%ss');
       
// set the output details
       
$ok = $toolkit->setOutput($thumbnail_output_dir, $filename_minus_ext.'[%timecode].jpg', PHPVideoToolkit::OVERWRITE_EXISTING);
// $ok = $toolkit->setOutput($thumbnail_output_dir, $filename_minus_ext.'[%12index].jpg', PHPVideoToolkit::OVERWRITE_EXISTING);
// check the return value in-case of error
       
if(!$ok)
        {
// if there was an error then get it
           
echo '<b>'.$toolkit->getLastError()."</b><br />\r\n";
           
$toolkit->reset();
            continue;
        }
       
// execute the ffmpeg command
       
$result = $toolkit->execute(false, true);
       
// get the last command given
// $command = $toolkit->getLastCommand();
// echo $command."<br />\r\n";
       
// check the return value in-case of error
       
if($result !== PHPVideoToolkit::RESULT_OK)
        {
// move the log file to the log directory as something has gone wrong
           
$toolkit->moveLog($log_dir.$filename_minus_ext.'.log');
// if there was an error then get it
           
echo '<b>'.$toolkit->getLastError()."</b><br />\r\n";
           
$toolkit->reset();
            continue;
        }
       
// get the process time of the file
       
$process_time = $toolkit->getLastProcessTime();
       
$total_process_time += $process_time;
       
       
$files = $toolkit->getLastOutput();
       
        echo
'Frames grabbed in '.$process_time.' seconds... <b>'.$thumbnail_output_dir.array_pop($files).'</b><br />'."\r\n";
        foreach(
$files as $key=>$file)
        {
            echo
'<img src="processed/thumbnails/'.$file.'" alt="" border="0" /> ';
        }
        echo
'<br /><br />';
   
// reset
       
$toolkit->reset();
       
    }
   
    echo
''."\r\n".'The total time taken to process all '.($key+1).' file(s) is : <b>'.$total_process_time.'</b>';
    echo
'<br />'."\r\n".'The average time taken to process each file is : <b>'.($total_process_time/($key+1)).'</b>';
    echo
'</body></html>';