While Safari and Edge support HEVC playback natively, Chrome and Firefox historically favored the open-source VP9 and AV1 codecs. This means if you try to play a raw HEVC file in a browser, it may fail unless your hardware supports it.
You run Plex or Jellyfin. Your library is 50 TB of mixed content. Re-encoding everything to h.265 is too slow with x265. UserHEVC’s hardware batch mode processes 40 files per hour. Because UserHEVC produces compliant Main10 profiles, every client (Apple TV, Fire Stick, Roku) direct-plays without transcoding. Your server CPU usage drops from 80% to 5%. Userhevc better. userhevc better
This is a common pain point for users. Unlike H.264, which is open and free to use, HEVC is patented technology. While Safari and Edge support HEVC playback natively,
Here is a user guide on when to toggle that "HEVC" switch. You run Plex or Jellyfin
HEVC requires significantly more processing power to decode (playback).