Пример #1
0
 /**
  * Extract a frame from a movie file.  Valid movie_options are start_time (in seconds),
  * input_args (extra ffmpeg input args) and output_args (extra ffmpeg output args).  Extra args
  * are added at the end of the list, so they can override any prior args.
  *
  * @param string     $input_file
  * @param string     $output_file
  * @param array      $movie_options (optional)
  */
 static function extract_frame($input_file, $output_file, $movie_options = null)
 {
     $ffmpeg = movie::find_ffmpeg();
     if (empty($ffmpeg)) {
         throw new Exception("@todo MISSING_FFMPEG");
     }
     list($width, $height, $mime_type, $extension, $duration) = movie::get_file_metadata($input_file);
     if (isset($movie_options["start_time"]) && is_numeric($movie_options["start_time"])) {
         $start_time = max(0, $movie_options["start_time"]);
         // ensure it's non-negative
     } else {
         $start_time = module::get_var("gallery", "movie_extract_frame_time", 3);
         // use default
     }
     // extract frame at start_time, unless movie is too short
     $start_time_arg = $duration >= $start_time + 0.1 ? "-ss " . movie::seconds_to_hhmmssdd($start_time) : "";
     $input_args = isset($movie_options["input_args"]) ? $movie_options["input_args"] : "";
     $output_args = isset($movie_options["output_args"]) ? $movie_options["output_args"] : "";
     $cmd = escapeshellcmd($ffmpeg) . " {$input_args} -i " . escapeshellarg($input_file) . " -an {$start_time_arg} -an -r 1 -vframes 1" . " -s {$width}x{$height}" . " -y -f mjpeg {$output_args} " . escapeshellarg($output_file) . " 2>&1";
     exec($cmd, $exec_output, $exec_return);
     clearstatcache();
     // use $filename parameter when PHP_version is 5.3+
     if (filesize($output_file) == 0 || $exec_return) {
         // Maybe the movie needs the "-threads 1" argument added
         // (see http://sourceforge.net/apps/trac/gallery/ticket/1924)
         $cmd = escapeshellcmd($ffmpeg) . " -threads 1 {$input_args} -i " . escapeshellarg($input_file) . " -an {$start_time_arg} -an -r 1 -vframes 1" . " -s {$width}x{$height}" . " -y -f mjpeg {$output_args} " . escapeshellarg($output_file) . " 2>&1";
         exec($cmd, $exec_output, $exec_return);
         clearstatcache();
         if (filesize($output_file) == 0 || $exec_return) {
             throw new Exception("@todo FFMPEG_FAILED");
         }
     }
 }
Пример #2
0
 public function seconds_to_hhmmssdd_test()
 {
     $times = array("00:00:00.50" => 0.5, "00:00:06.00" => 6, "00:00:59.99" => 59.999, "00:01:00.00" => 60.001, "00:07:00.00" => 7 * 60, "00:45:19.00" => 45 * 60 + 19, "03:45:19.00" => 3 * 3600 + 45 * 60 + 19, "126:45:19.00" => 126 * 3600 + 45 * 60 + 19);
     foreach ($times as $hhmmssdd => $seconds) {
         $this->assert_equal($hhmmssdd, movie::seconds_to_hhmmssdd($seconds));
     }
 }