# Xbox Plex transcoding 4k to 1080p

**URL:** <https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518>\
**Category:** Plex Players\
**Tags:** xbox, xbox-preview\
**Created:** [April 20, 2021, 2:40am UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518 "2021-04-20T02:40:39Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![nickwpearce](https://avatars.discourse-cdn.com/v4/letter/n/c2a13f/32.png) [@nickwpearce](https://forums.plex.tv/u/nickwpearce)\
**Post date:** [April 20, 2021, 2:40am UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518/1 "2021-04-20T02:40:40Z")

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Getting this error on Xbox Series X latest version in alpha that allows audio passthrough

Some 3840x2160 videos being transcoded to 1080p because, “Video stream exceeded coded resolution of 3840x2160”

Server Version#:  
Player Version#:

 ![received_274914320835645](https://global.discourse-cdn.com/plex/original/3X/8/9/898bef61e7095b514fbc6814c5f29d4b9ad83d8e.jpeg)

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**Author:** ![anon18523487](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@anon18523487](https://forums.plex.tv/u/anon18523487)\
**Post date:** [April 20, 2021, 8:24pm UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518/2 "2021-04-20T20:24:17Z")

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Seeing that the bitrate is being reduced from 37.3Mbps to 14 MBps, I would have to guess that your local playback quality is set to 20 Mbps. Change it to original.

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**Author:** ![Volts](https://avatars.discourse-cdn.com/v4/letter/v/a5b964/32.png) [@Volts](https://forums.plex.tv/u/Volts)\
**Post date:** [April 20, 2021, 8:52pm UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518/3 "2021-04-20T20:52:30Z")

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I think H.264 is (also) a problem. I don’t believe the Xbox Series X supports H.264 for 4K or at Level 5.1.

(Googling now for better evidence one way or another.)

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**Author:** ![anon18523487](https://avatars.discourse-cdn.com/v4/letter/a/49beb7/32.png) [@anon18523487](https://forums.plex.tv/u/anon18523487)\
**Post date:** [April 20, 2021, 8:57pm UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518/4 "2021-04-20T20:57:58Z")

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Oh I missed that. You are correct. The app does not support 4k h264.

However, that should have resulted in a 1080p h264 file with the same bitrate, so something else is also going on.

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**Author:** ![nickwpearce](https://avatars.discourse-cdn.com/v4/letter/n/c2a13f/32.png) [@nickwpearce](https://forums.plex.tv/u/nickwpearce)\
**Post date:** [April 20, 2021, 10:20pm UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518/5 "2021-04-20T22:20:55Z")

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Here is another tv show thats doing the same thing only 17mbs but hevc codex

 ![20210421_081738](https://global.discourse-cdn.com/plex/original/3X/1/4/14bf803b02008d8456dcd5d65ef23045546d1809.jpeg)

Both of these shows are fine through the plex app on my TV I just have to use earc for audio passthrough though

All 4k movies are fine I have not seen any do this

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**Author:** ![Volts](https://avatars.discourse-cdn.com/v4/letter/v/a5b964/32.png) [@Volts](https://forums.plex.tv/u/Volts)\
**Post date:** [April 20, 2021, 10:27pm UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518/6 "2021-04-20T22:27:42Z")

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I wonder if this is what’s going on for that video:

> [@Plex is transcoding full 3840x2160 video to h264 1080p](https://forums.plex.tv/t/plex-is-transcoding-full-3840x2160-video-to-h264-1080p/661850/8):
>
> Yes, that is the expected behaviour for decoders that implement the spec but the Xbox decoder behaves differently. In previous OS versions it would cause a crash, but now it simply refuses to play the video. This is the only viable solution for now unfortunately until something changes with decoder support.

3840x2160 is the consumer 4K resolution. It’s 100% normal and expected that 3840x2160 HEVC media is coded as 3840x2176 because of codec implementation details.

Moussa’s comment on the other thread is that the Xbox decoder is crabby.

This seems like a gigantic 🤦‍♂️ to me, but … I don’t have a Series X 🤷‍♂️

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**Author:** ![nickwpearce](https://avatars.discourse-cdn.com/v4/letter/n/c2a13f/32.png) [@nickwpearce](https://forums.plex.tv/u/nickwpearce)\
**Post date:** [April 21, 2021, 12:08pm UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518/7 "2021-04-21T12:08:44Z")

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At least i can watch via TV for now, shame the Series X is a beast, and now with audio pass-through I thought it would be perfect!

Thanks for the info everyone!

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**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\
**Post date:** [July 20, 2021, 12:09pm UTC](https://forums.plex.tv/t/xbox-plex-transcoding-4k-to-1080p/710518/8 "2021-07-20T12:09:37Z")

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