ELI5: Why is 1920x1080 and 1280x720 used to define high definition instead of say 2000x1000 or 1300x700? Why are certain pixel counts used instead of round, whole numbers? Submitted by [deleted] t3_123clwa on March 27, 2023 at 5:28 AM in explainlikeimfive [deleted] No comments 4