Use the 'H' key to delay subtitles or the 'G' key to speed them up (in 50ms increments).

Since this film has many releases (DVD, Blu-ray, 4K UHD, and various Criterion or anniversary editions), you must match the subtitle file to your specific video file: Most digital versions are 23.976 fps.

Because 2001 is famous for its long stretches of silence and visual storytelling, don't be alarmed if no subtitles appear for the first 25 minutes (the "Dawn of Man" sequence) or during the final "Star Gate" sequence. Subtitles will primarily be active during: The Pan Am space flight to the moon. The Clavius Base briefings.