php - Video uploading with Codeigniter and mysql -

i tried many ways upload videos through website. don't know why, can save images, text files etc. not possible save videos folder , database.

here view.

<form action="<?php echo base_url();?>galleries/add_vdo" method="post" enctype="multipart/form-data">                 <div class="input-group">                  <input type="text" class="form-control" placeholder="enter title" name="vdo_title" id="vdo_title">                   <textarea class="form-control" placeholder="about video"  name="vdo_desc" id="vdo_desc"></textarea>                  <input class="" name="ur_vdo" id="ur_vdo" type="file">                  <input class="btn btn-info" type="submit" name="submit" value="add now"/>                 <!--<button class="btn btn-info btn-lg" id="submit" type="button">invite</button>-->                  </div>                 </form>   

controller:

  function add_vdo()   {    $data['ur_vdo'] = $this->gallery_model->add_new_vdos();     redirect('galleries/vdo_gal','refresh');   } 

model :

 function add_new_vdos()  {  $this->load->helper('date');  date_default_timezone_set('asia/calcutta');  $config['upload_path'] = './uploads/myvideos/';  $config['allowed_types'] = 'mp4|avi|flv|wmv|';                     $this->load->library('upload', $config);                     $this->upload->initialize($config);                     $field_name ="ur_vdo";                     $rgpic="0";                     if ( !$this->upload->do_upload($field_name))                     {                     $error = $this->upload->display_errors();                     $data['error']=$error;                     }                     else                     {                     $data = $this->upload->data();                     $regpicname=$data['file_name'];                     $rgpic="1";                     }                       if($rgpic!=0)                    {                      $dts = array(                            'familypost_caption'=>$this->input->post('vdo_title'),                            'familypost_desc'=>$this->input->post('vdo_title'),                            'user_id' =>$uid,                            'familypost_vdo'=>$regpicname,                            'familypost_status'=>'a',                            'familypost_date'=>now()                            );                    }                    else                    {                     $dts = array(                            'familypost_caption'=>$this->input->post('vdo_title'),                            'familypost_desc'=>$this->input->post('vdo_title'),                            'user_id' =>$uid,                            'familypost_status'=>'a',                            'familypost_date'=>now()                            );                         }                     $vdqr = $this->db->insert('roottildb_familyposts',$dts);        } 

i don't know why, video upload fails without showing error. how can solve issue?