Don't settle for heavily compressed streams. Seek out "4K HDR 60fps" content on YouTube (ensure the "HDR" badge is active) or use a 4K UHD Blu-ray disc for the highest bitrate.
Video Info: File size : 724 MB. Duration : 00:01:23. Overall bit rate : 73 Mb/s. Frame rate : 60 fps. 4K HDR Fireworks Sony Oled TV Demo