function ffmpeg_auto_thumbnail in Video 6.3

Generates a thumbnail from the video file Implementing hook_auto_thumbnail on inc

Parameters

$vidfile: object with element information

Return value

a drupal file objects

File

plugins/ffmpeg.inc, line 126

Provide a api for video conversion and auto thumbnailing using ffmpeg.

Code

function ffmpeg_auto_thumbnail($vidfile) {
  global $user;
  $uploaded_file = $vidfile;
  $fid = $uploaded_file["fid"];

  // are we debugging?
  // escape the filename for safety
  $videofile = escapeshellarg($uploaded_file['filepath']);
  $thumb_path = variable_get('video_thumb_path', 'video_thumbs');

  //files will save in files/video_thumbs/#fileId folder
  $tmp = file_directory_path() . '/' . $thumb_path . '/' . $fid;

  // Ensure the destination directory exists and is writable.
  $directories = explode('/', $tmp);

  //  array_pop($directories); // Remove the file itself.
  // Get the file system directory.
  $file_system = file_directory_path();
  foreach ($directories as $directory) {
    $full_path = isset($full_path) ? $full_path . '/' . $directory : $directory;

    // Don't check directories outside the file system path.
    if (strpos($full_path, $file_system) === 0) {
      field_file_check_directory($full_path, FILE_CREATE_DIRECTORY);
    }
  }
  $count = variable_get('no_of_video_thumbs', 5);
  $duration = ffmpeg_auto_playtime($vidfile);
  $files = NULL;
  for ($i = 1; $i <= $count; $i++) {

    // get ffmpeg configurations
    $seek = $duration / $count * $i;
    $thumbfile = $tmp . "/video-thumb-for-{$fid}-{$i}.png";

    //skip files already exists, this will save ffmpeg traffic
    if (!is_file($thumbfile)) {
      $tnail = variable_get('video_transcoder_path', '/usr/bin/ffmpeg');
      $options = preg_replace(array(
        '/%videofile/',
        '/%thumbfile/',
        '/%seek/',
      ), array(
        $videofile,
        $thumbfile,
        $seek,
      ), variable_get('video_ffmpeg_thumbnailer_options', '-i %videofile -an -y -f mjpeg -ss %seek -vframes 1 %thumbfile'));

      //    $options = preg_replace(array('/%videofile/', '/%tmp/', '/%id/', '/%interval/'), array($videofile, $tmp, $i, ($duration/$count)), variable_get('video_image_thumbnailer_options', '-ss %id*%interval -i %videofile -vframes 1 %thumbfile'));
      //  ffmpeg -ss $i*$interval -i intro.mov -vframes 1 -s 320x240 thumb_$i.jpg

      //ffmpeg -i superstunt_8uiarzrh.mp4 -r 0.1 -ss 00:00:5 -f image2 img/images%02d.png

      ////ffmpeg -i superstunt_8uiarzrh.mp4 -r 0.05 -ss 00:00:5 -f image2 img/images%1d.jpg

      // executes the command
      $command = "{$tnail} {$options}";
      ob_start();
      passthru($command . " 2>&1", $tnail_return);
      $tnail_output = ob_get_contents();
      ob_end_clean();
      if (!file_exists($thumbfile)) {
        $error_param = array(
          '%file' => $thumbfile,
          '%cmd' => $command,
          '%out' => $tnail_output,
        );
        $error_msg = t("error generating thumbnail for video: generated file %file does not exist.<br />Command Executed:<br />%cmd<br />Command Output:<br />%out", $error_param);

        // let's log this
        watchdog('video_ffmpeg', $error_msg, array(), WATCHDOG_ERROR);
      }
    }

    // Begin building file object.

    //TODO : use file_munge_filename()
    $file = new stdClass();
    $file->uid = $user->uid;
    $file->status = FILE_STATUS_TEMPORARY;
    $file->filename = trim("video-thumb-for-{$fid}-{$i}.png");
    $file->filepath = $thumbfile;
    $file->filemime = file_get_mimetype("video-thumb-for-{$fid}-{$i}.png");
    $file->filesize = filesize($thumbfile);
    $file->timestamp = time();
    $files[] = $file;
  }
  return $files;
}