Which video and audio formats are supported for DirectPlay on Xbox One Plex client?

@istvan.gyori@icloud.com said:
I’ve tried with a lot of different formats, but in most cases i would use it with mkv/h.265/DTS/AC3 formats.

The bold above is likely the biggest problem:

  1. DTS is not a supported codec for the Xbox One (outside of the Bluray app at least). This will always trigger an audio transcode.
  2. h265 is supported, but if anything needs to be transcoded (see #1) then the h265 will need to be transcoded to h264 (I can’t remember the exact reasons for this offhand). During this transcode to h264 it will also transcode down to 1080p.