Nvidia Shield Pro 2019, What codecs work without transcoding?

[shark2k]

I suggest looking at this forum post about 4k and PLEX.

[INFO] Plex, 4k, transcoding, and you - aka the rules of 4k

NOTE: for 2022 – Plex has come a long way since this FAQ was originally written, HW transcoding has become more available and more stable, and tone mapping was recently added to address the hdr/sdr color conversion issues. The first 4 ‘rules’ generally are no longer as important as they once were, but may still be a good thing to bear in mind. Dolby Vision, is an entirely other mess. THIS thread/FAQ is NOT about DV. DV work is still in progress, and there are no perfect TV’s or external devic…

There are many things that can trigger transcoding with 4k, so after going through that and making sure all your settings and your setup are good to handle 4k, then I would suggest looking at your logs.

-Shark2k