So I directly disabled the transcoding function on the server, that is, [Server - Users - Playback] unchecked [Allow video transcoding, if necessary, during me Dia playback], but when I use the Emby client, except that Redmi TV can play 4k hevc video, my projector and tablet will trigger client transcoding. In addition, when playing 4k av1 hdr and 4k vp9 videos (if supported by the hardware itself), Emby is also normal.Only the most common movie encoding format 4k hevc will make an error, which makes me very confused.