This 4K video should have (SRT) subtitles in English,
Norwegian, French, Spanish, Indonesian, Russian
Greek and Japanese. Please test subtitles over both airplay and Chromecast too. Note the subtitles only start around 20 seconds in.:)

This is a 4K UHD10 HDR HEVC file, delivered by Vimeo's stack (Skyfire)

This video is transcoded by Skyfire (Vimeo). It has an irregular aspect ratio, and has burned resolutions. Please check downloading works as expected.