Watch & download 4k test pattern video MP4 and MP3 now. You can download free mp3 or MP4 as a separate song, or as video and download a music collection from any artist, which of course will save you a lot of time.
This test pattern tests the maximum brightness of your display. The music can be downloaded at http//bitly/1svbgtj.
Can only be viewed correctly using a 4k hdr tv that supports hdr.