Windows XP cannot hardware decode HEVC. The K-Lite pack 13.8.5 includes a software decoder for HEVC, but realistically, any CPU from the XP era will fail to play 1080p HEVC in real-time. Stick to H.264.
Q: Is the K-Lite Codec Pack free? A: Yes, the K-Lite Codec Pack is free to download and use. k lite codec pack windows xp
. It was a lightweight player that looked like the old Windows Media Player 6.4 but could play Safety First: Windows XP cannot hardware decode HEVC