Codeigniter大视频上传很好，但音频没有上传

Question

在我的控制器中，我正在尝试添加音频和视频，我更改了我的php.ini文件并扩展了max_file_size，post_size等。

当我上传 25M 的视频时，它已成功上传

但是当我尝试上传 4MB 的音频文件时，它就失败了。

然后我再次尝试上传 433KB 的音频文件，成功上传。

这是我的代码，我无法找到它无效的原因

     if(!empty($_FILES['audio_upload']['name'])){
            $config['upload_path'] = 'uploads/';
            $config['allowed_types'] = 'mp3|wmv|mp4';
            $config['max_size'] = '0';
            $config['file_name'] = $this->input->post('sub_category_name');

            //Load upload library and initialize configuration
            $this->load->library('upload',$config);
            $this->upload->initialize($config);


            if($this->upload->do_upload('audio_upload')){
                $uploadData = $this->upload->data();
                $audio_upload = $uploadData['file_name'];
            }
            else{
                $audio_upload = '';
            }
        }
        if( !empty($audio_upload)){
            $media_link = 'uploads/'.$audio_upload;
        }
        else{
            $media_link = $this->input->post('media_link');
        }
    //**************************************END
    //**************************************Video Upload
        if(!empty($_FILES['video_upload']['name'])){
            $config['upload_path'] = 'uploads/';
            $config['allowed_types'] = 'mp3|wmv|mp4';
            $config['max_size'] = '0';
            $config['file_name'] = $this->input->post('sub_category_name');

            //Load upload library and initialize configuration
            $this->load->library('upload',$config);
            $this->upload->initialize($config);

            if($this->upload->do_upload('video_upload')){
                $uploadData = $this->upload->data();
                $video_upload = $uploadData['file_name'];
            }
            else{
                $video_upload = '';
            }
        }
        if( !empty($video_upload)){
            $video_link = 'uploads/'.$video_upload;
        }
        else{
            $video_link = $this->input->post('media_link');
        }