How do I force Jellyfin server to stop transcoding?

[TheDreadPirate]

My jellyfin server is located on my NAS (QNAP)

I can't find a way to stop it to transcode HEVC and the others.

The only few times it stops transcoding is when I use Windows client.

I usually play it on my LG TV and Android, both have capabilities to direct stream HEVC.

Jellyfin will always direct play if the client device and app supports the codecs in your media.  If it is transcoding it is because it needs to.  Also keep in mind that it may be transcoding due to incompatibility with the audio codec or to burn in subtitles.

Please upload your jellyfin log to pastebin and link it here.  If there are ffmpeg logs, include those too.