Plex downgrading 4k and 1080P video quality

Server Version#: 1.27.2
Player Version#: 5.42.2
I have a QNAP TS-453Be Media Server running Plex. I recently created a home video of a family trip in 4K - H.264/AVC Stereo sound. Plex says original is 30 mb/sec. Playback is considerably lower quality even though I have Direct Stream, Disable bit limit, play original settings in player and also on Server. Example would be a picture of a sign - the letters are blocky and unreadable. My QNAP Server has a DLNA player and when watching the movie through that interface its crystal clear. I created the file in 1080P format and also get lower quality though not as bad as the 4K version (18 MB/s)

The Server and TV(Samsung Q90A 4K Neo) are located in the same house so just trying to get top quality playback through Plex. This happens on my other Samsung Q900 8k TV as well.

What am I missing?

During playback look bring up on screen controller and look at playback info and it should give general reason why if it is transcoding

Thanks for the replay - sorry for the simple question but where do I find the “screen controller”? I can see info from the Dashboard and such which tells the video is playing but no reason for the transcode. From the Plex Dash application it does say Transcode (H264, 2Mbps) which prob explains the big downgrade in quality.

When you are playing something on your tv click something so the overlay with the progress bar, play button etc shows up. That is what i mean by on screen controller like where you could enable subtitles for example. on the right side of the play button click the three dots which will take you to pplayback settings like in my screenshot below. Enable “Playback information” and then when you go back to player is should have info on why it is transcoding.

since 2mb is the remote quality default guessing that maybe the client or serrver thinks they are not on same network. or if remote then that remote acccess not working really so using relay which also has a 2mb limit,

Got it thank you - It says the server is on a WAn and that Maxbitrate is 2000 mbps which is incorrect - where do I control that setting so that I can increase the quality?

each app would have it;s own under settings video quality for remote and local,

for Samsung it is here.

I had both Local/Remote set to “Original” - I changed it to “20mb/4K)” and it still stuck at 2000. There is something somewhere else limiting this it seems

then I would guess it is caused by Relay because it thinks the player is remote to the server and remote access is not workin properly. Need to figure out why that is. Could be many reasons. Are both server and client on same network subnet? Firewalls, DNS issues could also cause it.

Reading the Relay piece it def seems like that is whats happening. Everything is on a 192.168.1.x IP address on my home network so not sure why Plex is remote connecting.

Probably would need to know a bit about your local network, ISP etc. Like I mentioned there could be many reasons for this. Enable logging to server in app on Samsung, play something then get the server logs (which will include logs from player) . In the Plex Media Server.log Look for lines with the local Ip of your server and see what errors show when it is trying to connect.

Its something on my QNAP server I think. The IP address is 192.168.1.2, however I cannot connect directly to Plex through 192.168.1.2:32400 (default). All access to Plex is “Indirect” within my home network. I can ping the Media server no problem but cant connect to Plex directly. When I originally installed Plex the IP address was .64 but after an extended power outage it changed to .2. Not sure if Plex might have the old value stored somewhere or not?

I think I figured out the problem. I few release back QNAPA introduced a firewall which I set to restrictive permissions - well, nothing could talk to it directly anymore - I opened up 32400 and can talk local. Thanks for the advice!

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