public function watermarkVideo($src, $dest)
    {
        $ffmpeg = FFMpeg::create();
        $video  = $ffmpeg->open($src);

        if(!config('thumbnail.watermark.video.enabled')) 
            throw new Exception("Configure watermark path in env file");
            
        // $video->filters()->resize($dimension, $mode, $useStandards);
        $video
            ->filters()
            ->watermark(config('thumbnail.watermark.video.path'), array(
                'position' => 'relative',
                'bottom' => 50,
                'right' => 50,
            ));


        $video
            ->save(new Video\WebM(), $dest);        

        if($video) return true;
        else return false;
    }