Lakshmajim\Thumbnail\ThumbnailServiceProvider::class,

'Thumbnail' => Lakshmajim\Thumbnail\Facade\Thumbnail::class,

<?php 

namespace Trending\Http\Controllers\File;

use Carbon;
use Thumbnail;
use Illuminate\Http\Request;
use Trending\Http\Controllers\Controller;


/**
 * -----------------------------------------------------------------------------
 *   ThumbnailTest - a class illustarting the usage og Thumbnail package 
 * -----------------------------------------------------------------------------
 * This class having the functionality to upload a video file 
 * and generate corresponding thumbnail
 *
 * @since    1.0.0
 * @version  1.0.0
 * @author   lakshmajim <lakshmajee88@gmail.com>
 */
class ThumbnailTest extends AnotherClass
{
    public function testThumbnail()
    {
        // get file from input data
        $file             = $this->request->file('file');

        // get file type
        $extension_type   = $file->getClientMimeType();

        // set storage path to store the file (actual video)
        $destination_path = storage_path().'/uploads';

        // get file extension
        $extension        = $file->getClientOriginalExtension();


        $timestamp        = str_replace([' ', ':'], '-', Carbon::now()->toDateTimeString());
        $file_name        = $timestamp;

        $upload_status    = $file->move($destination_path, $file_name);         

        if($upload_status)
        {
            // file type is video
            // set storage path to store the file (image generated for a given video)
            $thumbnail_path   = storage_path().'/images';

            $video_path       = $destination_path.'/'.$file_name;

            // set thumbnail image name
            $thumbnail_image  = $fb_user_id.".".$timestamp.".jpg";

            // set the thumbnail image "palyback" video button
            $water_mark       = storage_path().'/watermark/p.png';

            // get video length and process it
            // assign the value to time_to_image (which will get screenshot of video at that specified seconds)
            $time_to_image    = floor(($data['video_length'])/2);


            $thumbnail_status = Thumbnail::getThumbnail($video_path,$thumbnail_path,$thumbnail_image,160,128,$time_to_image,$water_mark,true);      
            if($thumbnail_status)
            {
                echo "Thumbnail generated";
            }
            else
            {
                echo "thumbnail generation has failed";
            }
        }
    }
}
// end of class ThumbnailTest
// end of file ThumbnailTest.php  

$thumbnail_status = Thumbnail::getThumbnail(<VIDEO_SOURCE_DIRECTORY>,<THUMBNAIL_STORAGE_DIRECTORY>,<THUMBNAIL_NAME>);

$thumbnail_status = Thumbnail::getThumbnail(<VIDEO_SOURCE_DIRECTORY>,<THUMBNAIL_STORAGE_DIRECTORY>,<THUMBNAIL_NAME>,<HEIGHT_OF_IMAGE>,<WIDTH_OF_IMAGE>,<TIME_TO_TAKE_SCREENSHOT>,<WATERMARK_SOURCE_PATH>,<WATER_MARK>);

Thumbnail::getThumbnail($video_path,$thumbnail_path,$thumbnail_image,160,128,$time_to_image,$water_mark,false);

Thumbnail::getThumbnail($video_path,$thumbnail_path,$thumbnail_image,160,128,$time_to_image,$water_mark,true);