Does it support 4K/HDR on Xbox?
XBOX ONE/1080P/Hardwired Network(10gb)/PMS WIN 10 i7 16gb RAM
I get buffering on all DTS/ATMOS/Dolby HD content at exactly 27 minutes in no matter the video size. I have tried the KODI but it is buggy and often has all audio out of sync.
I have used Handbrake to convert MKV to MP4, converted DTS/ATMOS/Dolby HD to AC3 or AAC 5.1. This has been my only workaround.
What is frustrating is that my 3-year-old ROKU works perfectly no matter the format and audio. I installed the Roku into my system and watched Ad Astra in 1080p with ATMOS without issue. Did the same with Watchmen movie (>3hrs) in 1080p and DTS.
This fall I am looking at a 4K display and an upgrade the XBOX for my kids. If the issues with Plex continue I will be forced to use a different Plex streamer for TV and Film content.
This decision is also easier considering Netflix app has severe ATMOS audio issues on the XBOX.
A total rewrite of the app was just released in preview and it has corrected all buffering issues for me. I just watched a 70Mb 4k video for 2 hours with no issue. The HDR coloring looks great now also.
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How to Access this preview version ? Thanks
See the announcement thread: New Xbox One App preview
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Have you tried to pause, come back, and resume watching the same video? Iām still having buffering issues on Continue Watching for 2k native Blu-Ray mkv files.
I just loaded something, paused for 10 minutes, then resumed it without issue. I am able to resume previously played items that stopped as well. I never really had an issue with that in the past. Are you sure you are now on 2.56.2.70?
Yup. Definitely. I like all the other changes that have been made.
Actually, after some experimenting, it seems this issue is only relegated to videos that have forced subtitles.
Unfortunately, still experiencing buffering when skipping forward/back in live and recorded TV. Live TV completely freezes in a buffering state after about 15 mins.
These are .TS files recorded via Plex DVR using hdhomerun hardware.
Same issue here and since the client on my Samsung TV is not better, I am condemned to watch my movies on my phone. I enable early access on the Xbox client and still experience bufferingā¦
@Moussa I saw you are involved in the development on the new apps. Can you do something to solve this buffering issue. Android app doesnāt have this issue.
Thanks
Yep, same here. Tried a file that was encoded with DTS Master Audio. Plays ok when started from begining, but skipping around fwd/backward causes it to start buffering. So i donāt see a difference to before - if the file isnāt encoded with Dolby Digital 5.1 or lower it buffers.
Hi all. The latest update for the preview app has some changes that may resolve some buffering issues some of you are experiencing. I donāt expect it will solve them all entirely but it would be good to know if it helps at all.
Itās basically the same as before. Pig with some lipstick.
However a whole bunch of useful features are either gone or harder to use.
Gone: 10 minute skip forward/back
Gone: time a video file will end when clock is turned on in settings
Harder: choosing subtitles, more clicks to do same thing on old app
Harder: choosing shuffle when playing an album/artist/playlist
Plus, as others have said, still buffering and playback stuttering.
I know a lot of work went into this new app, but I donāt see the point.
Watched a low bitrate 4K HDR movie tonight with HE-AAC 5.1 (no sub) with no buffers on this new app.
Otherwise in my Movies library I canāt access collections and playlists. It works fine in my TV Shows library.
Buffering is fixed but stuttering / frames issue
4K stutters/frame drops when converting DTS audio to AC3
4K plays perfect with AC3 audio and SRT subs
Playlists donāt work
Hi,
I can confirm using the new preview app as heavily reduced buffering, I have unticked direct play as force of habit. Iām now loading plex instead of Kodi then plex addon.
I have watched a couple 4k (10-21gb) files without issues, and all my of TV and Movies (x264/x265) have played lovely.
Hi,
buffering looks better with 5.1.1. At least, I can watch a movie. There is still buffering issues with skipping forward/backward per 30 seconds steps. If I only skip forward it looks OK but if I skip forward few times (like to skip 5 minutes commercials) and then backward few times to find where the movie restarts, it buffers and after few minutes then Playback error screen shows up.
I guess you are in the right track!
I did a bit of testing on that buffering issue when skipping forward/backward and here what I found.
I transcode in a ramdisk of 8GB. It should be more than enough. When listening locally, it should never transcode but for whatever reason, the movie I am testing with (Spaceballs!) have is audio transcoded to AAC.
It fills the ramdrive to 29% (2.5GB of audio transcoding???). While writing this and watching the movie in background, my transcoding folder is 71% used and it continue to grow. I would not be surprised you leak something while transcoding. I donāt thing it is normal the transcoding data is not clean once played. The transcoding throttled buffer is set to 60 seconds. 60 seconds of transcoding audio shall not use 6.1GB of data. I guess when it reaches 100% the streams will stop!
So, when I skip forward or backward juste a little, it looks OK but if I skip like 15 minutes by steps of 30 seconds, It start buffering. It fills up the transcoding drive and these errors appears in the logs:
Hop this help to solve this problem,
P.S.: For those who ask why I transcode in a ramdrive, it is to save my SSDās life. 
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I tried to resume watching a movies recorded with my HDHomerun. Video and audio are direct play and Xbox client is buffering indefinitely till the Playback error screens shows up. I see no errors on server side.
If I unchecked, Direct play in the app settings, the playback switches to Direct stream and it starts without buffering. The 30 seconds forward/backward skipping is also very fast. I donāt see any buffering at all.
