h.264 has near-universal device support and almost no playback issues at the expensive of slightly larger file sizes. h.265 and av1 give you 10-bit 4K but playb

h.264 has near-universal device support and almost no playback issues at the expensive of slightly larger file sizes. h.265 and av1 give you 10-bit 4K but playback on even modest laptops can become choppy or produce render artifacts. I tried all three, desperately wanting av1 to win but Jellyfin on a small streaming server just couldn't keep up.