复制代码 代码如下:

<?php
// references http://www.longtailvideo.com/support/forum/Modules/12661/External-PHP-with-FFmpeg-using-readfile-
// generate a preview image from an FLV file on-the-fly, or to save
// call with: ffmpeg_image.php?file=video.flv&time=00:00:05&browser=true
// call with: ffmpeg_image.php?file=video.flv&percent=75.3&browser=true
// no time defaults to \"00:00:01\" (one second), no browser defaults to \"true\"
$videofile = (isset($_GET[\'file\'])) ? strval($_GET[\'file\']) : \'video.flv\';
$image = substr($videofile, 0, strlen($videofile) - 4);
$time = (isset($_GET[\'time\'])) ? strval($_GET[\'time\']) : \'00:00:01\';
// debug (\"  File: \", $videofile);
// debug (\" Image: \", $image);
// debug (\"  Time: \", $time);
// check time format
if (!preg_match(\'/\\d\\d:\\d\\d:\\d\\d/\', $time))
{
  $time = \"00:00:00\";
}
if (isset($_GET[\'percent\']))
{
  $percent = $_GET[\'percent\'];
// debug (\" Percent: \", $percent);
  ob_start();
  exec(\"/usr/bin/ffmpeg -i \\\"\". $videofile . \"\\\" 2>&1\");
  $duration = ob_get_contents();
  ob_end_clean();
  // debug (\"Duration: \", $duration);
  preg_match(\'/Duration: (.*?),/\', $duration, $matches);
  $duration = $matches[1];
// debug (\"Duration: \", $duration);
  $duration_array = split(\':\', $duration);
  $duration = $duration_array[0] * 3600 + $duration_array[1] * 60 + $duration_array[2];
  $time = $duration * $percent / 100;
// debug (\" Time: \", $time);
  $time = intval($time/3600) . \":\" . intval(($time-(intval($time/3600)*3600))/60) . \":\" . sprintf(\"%01.3f\", ($time-(intval($time/60)*60)));
// debug (\" Time: \", $time);
}
$browser = (isset($_GET[\'browser\'])) ? strval($_GET[\'browser\']) : \'true\';
// debug (\" Browser: \", $browser);
if ($browser == \"true\")
{
  header(\'Content-Type: image/png\');
  exec(\"/usr/bin/ffmpeg -vcodec png -i \\\"\" . $videofile . \"\\\" -ss \" . $time . \" -vframes 1 -f image2 -\");
//header(\'Content-Type: image/jpeg\');
//exec(\"/usr/bin/ffmpeg -vcodec mjpeg -i \\\"\" . $videofile . \"\\\" -ss \" . $time . \" -vframes 1 -f image2 -\");
}
else
{
  exec(\"/usr/bin/ffmpeg -vcodec png -i \\\"\" . $videofile . \"\\\" -ss \" . $time . \" -vframes 1 -f image2 \\\"\" . $image . \"\\\"%d.png\");
//exec(\"/usr/bin/ffmpeg -vcodec mjpeg -i \\\"\" . $videofile . \"\\\" -ss \" . $time . \" -vframes 1 -f image2 \\\"\" . $image . \"\\\"%d.jpg\");
}
?>