What CPU and GPU?
CPU: i38109U
GPU: Iris 655
Which Intel Graphics drivers are you using?
26.20.100.8141
Youāre referencing a NAS setup⦠Are you using PMS for Windows? If so where specifically in the PMS installation directory are the drivers located under? (File/ or folder names, etcā¦)
I donāt use a windows PMS, but on my Nas, the new driver is ā /Plex Media Server/target/lib/dri/iHD_drv_video.soā , there are two drivers in this folder, the old one is āi965**.soā , maybe windows PMS has the similar file structure, the new driver isnāt here until 1.17 PMS, delete it , then the artifacting can be temporarily fixed, the only thing we can do is to wait update.
Very disappointing that this hasnāt been fixed. Hardware encoding is one of the main reasons I purchased a plex pass.
My Windows server is running the latest software available.
PMS Server 1.19.3.27.64
Intel drivers 27.20.100.8187 for my HD 630 on my i5-9400
The issue occurs if I have hardware encoding enabled. Everything is fine if it is disabled.
Similar problem here. I5-8350 w 620 graphics. Action scenes are really blocky. Turning off hardware acceleration fixes it. Windows 10 latest PMS. Files being played are 720p .mp4 stored on 10tb WD elements drive connected via usb3 to my ASUS router. They shouldnāt even be transcoded in the first place. Roku stick is the player.
CPU: Intel i7 4720HQ
Hate to break this to you, but your particular issue might be do entirely to the version of Quick Sync in that Haswell processor being pretty rough. That generation of QSV was known to have poor image quality. Your screenshots and sample video look like the kind of quality Iāve seen before from old QSV.
The quality issues discussed in this thread with modern versions of QSV area bit different. Theyāre great in some cases, and then dropping down to 720p 2mbps for transcoding introduces a pretty wrecked image for some files. Itās sporadic. Iād guess your image quality issues are consistent across everything you are transcoding through QSV on that CPU.
I have the same problem with my NUC server running Windows 10 Pro.
Intel i5-7260U
Iris Plus Graphics 640
PMS ver. 1.19.3.2843
DCH driver ver. 27.20.100.8190
Tested 1080p > 720p 4 Mbps on 4k Firestick
And 1080p > 720p 3 Mbps on Plex Mobile (Android)
Seems the be an issue with the encode. When using HW for decode and SW for encode, the video looks good or as expected. When using HW for both, the quality fluctuates and looks absolutely terrible at itās worst, which is most of the time.
Canāt believe this has been an issue for so long and is still not resolved. Itās one of the biggest benefits of Plex Pass for server owners and is practically unusable at this point.
Hereās a sample image of whatās supposed to be 720p 3 Mbps from Plex Mobile. This is with HW decode and encode.
This is a sample thatās 720p 3 Mbps with HW decode and SW encode.
The fact is:
1ćThe quality of hardware transcoding in version 1.17.xxxx is correct.
2ćFrom version 1.18.xxxx to the 1.19.xxxx, the quality of hardware transcoding is very poor.
What have you guys done?
Fix this low-level bug of hardware transcoding please.
This has been going on for half a yearā¦
Same issue any version onwards from 1.17 has very poor transcoding quality.
Same is happening for me since yesterday.
I finally upgraded from 2500k to a i7-8700T to start using hardware transcoding espescially for 4k content just to find out this pretty much destroys watching Anime.
Can someone comment on this please ? Is there a fix coming, are you aware of this ? The Topic has been up since January and I donāt want to downgrade to 1.17 just to use a feature I paid for.
There is really no way but to downgrade to version 1.17 and the issue is completely gone. But yes, I agree it is not a sustainable solutionā¦
My solution so far:
1ćInstall 1.19.3.2831
2ćCopy all the default bundles in \ Resources \ plugin-ins-xxxxxx in the installation directory to other folders
3ćUninstall 1.19.3.2831
4ćInstall 1.17.0.1841
5ćUse the bundles from 1.19 backed up in the second step above, Overwrite the old version in 1.17.
6ćNow I have a server with the correct hardware decoding quality and can search metadata normally.
In the end, I am not a technician, and doing so may be unstable but at least works for me.
The known problem with this is that the IOS client cannot display the local database panel in all servers, and other clients have not found a problem.
Same pixelation issue using Pms docker on Unraid using HW Nvenc
It even happens when using direct play and not transcoding so I assume it may have to do with decoding as was mentioned above. I am still learning about much of this stuff and how it works though.
Never experienced any of the pixelation until installing my 1050ti last week and now it pops up on most videos. I am going to play around with a few settings later today and see if removing encoding/decoding or anything affects it. I will try and take some logs and videos as well but basically same thing as opās vids/pics from what I can tell.
Iāve had the following scenario:
Decode on server, watch on phone (s10+, stock android) Get artifacting
Decode on server, watch on PC no artifacting
I and my users barely use decoding tho, due to plenty of bandwith (most users on same network)
Server is getting an upgrade to a new i3 since what its running now is utter garbage; so Iāll update here and share any findings.
Just stopping in to say āme tooā. Iām running a Intel i7-8700 with Intel HD 630 iGPU, and Plex 1.19.4.2865 on Windows 10.
Hardware transcoding has a noticeable decrease in quality. It seems to be the worst/most noticeable during action scenes, or if the scene has trees (not sure why, but leaves look like absolutely garbage). But in general to me most scenes look like there is āstaticā (like old TVs when they donāt have signal)⦠just pixilation/blurring
Encountering the same issue on Intel i3-8100 w/ UHD 630 (latest driver 27.20.100.8280) and latest Plex Media Server 1.19.4.2902 (latest) on Windows 10. Iāve browsed through reddit and this forum for workarounds (e.g. rolling back driver version), and the only confirmed fix is to rollback Plex to 1.17.0.1841 or disable hw transcoding, which is becoming harder and harder as new versions come out.
I recently built this new server to take advantage of hw transcoding, and I am now regretting it. I am also a software developer so I know it is easier said than done when I ask this: Is it possible for you guys to revert the enabling of zero-copy hardware transcoding on Windows w/ Intel GPUs that you guys added in 1.18.0.1846? At least until this is fixed. Not sure whether this is a compile-time functionality, but an advanced server settings option would be fine too.
Encountering this issue on an Intel Xeon E3-1225 v5, which has an Intel iGPU P530. Currently running PMS 1.19.4.2935.
I bought a Dell T30 last summer (summer of 2019) to run PMS specifically, which this processor is rated to transcode several streams at a time with PMS by several reviewers and posters in various forums. Itās disappointing to have this issue persist after the server worked great for the first couple months of having it.
I am curious if anyone has had issues with hardware transcoding if using a discrete GPU with newer version of PMS? I bought the box planning on upgrading it with a quadro P2000 eventually, but Iām hesitant to spend the money right now. The question may be a little off topic, though. Thanks for any updates, ahead of time.

