[PHP]代码    

$file = 'video_file';  $config['upload_path'] = './video_folder/';  $config['allowed_types'] = 'mov|mpeg|mp3|avi';  $config['max_size'] = '50000';  $config['max_width']   = '';  $config['max_height']   = '';    $this->upload->initialize($config);  $this->load->library('upload', $config);    if(!$this->upload->do_upload($file))  {  // If there is any error  $err_msgs .= 'Error in Uploading video '.$this->upload->display_errors().'<br />';  }  else  {  $data=array('upload_data' => $this->upload->data());  $video_path = $data['upload_data']['file_name'];    $directory_path = $data['upload_data']['file_path'];  $directory_path_full      = $data['upload_data']['full_path'];  $file_name = $data['upload_data']['raw_name'];    // ffmpeg command to convert video    exec("ffmpeg -i ".$directory_path_full." ".$directory_path.$file_name.".flv");     // $file_name is same file name that is being uploaded but you can give your custom video name after converting So use something like myfile.flv.    /// In the end update video name in DB   $array = array(  'video' => $file_name.'.'.'flv',  );  $this->db->set($array);  $this->db->where('id',$id); // Table where you put video name  $query = $this->db->update('user_videos');  }