# Hardware transcodes for 1080p do not work **URL:** \ **Category:** Plex Media Server\ **Tags:** server-linux\ **Created:** [March 8, 2023, 5:24am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778 "2023-03-08T05:24:14Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 8, 2023, 5:24am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/1 "2023-03-08T05:24:14Z")
Server Version#:1.31.1.6733 OS: RHEL 9.1 Card: Quadro T600 CUDA: have tried with both 11.7 and 12.1 as the active cuda via /etc/alternatives OK, so this is weird. My server is hardware transcoding 4k movies just fine. It can even transcode 1080p videos to 720p using hardware. 480P-\>320P worked as well. When I transcode 1080p to a lower bitrate 1080p stream (working around a wireless bandwidth issue that will be solved when I toss my chromecast) the CPU gets used for transcoding, not the GPU. Is this a possible bug in plex itself? I think this may be the relevant log entry: [Req#7f69/Transcode/5b6c99530e76d66a-com-plexapp-android/0e2140bc-d46f-41c0-a711-9e8166f60954] Impossible to convert between the formats supported by the filter ‘Parsed\_scale\_cuda\_1’ and the filter ‘auto\_scale\_0’ ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 8, 2023, 5:48am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/2 "2023-03-08T05:48:40Z")
Woops, this seems to be the same issue discussed here: > [@Transcoding 1080p not using HW Acceleration](https://forums.plex.tv/t/transcoding-1080p-not-using-hw-acceleration/827428/56): > > There are many threads on this to which I’ll try to update all. The most reliable means is to watch the Announcements thread. This is the current newest post. I guess there’s been no fix yet? ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [March 8, 2023, 6:13am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/3 "2023-03-08T06:13:52Z")
The issue has been fixed and was in an Engineering build 1.31.1.6715. 1.31.1.6733 release timing did not include that correction. On the Debian side, you don’t switch between Nvidia drivers using /etc/alternatives. It’s a system-level runtime library installation of several packages specifically the kernel DKMS part of the driver Below is the 515.60.13 (Ubuntu blessed Cuda 12.0) ```auto [chuck@lizum ~.2000]$ dpkg -l | grep nvidia | grep 525 ii libnvidia-cfg1-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA binary OpenGL/GLX configuration library ii libnvidia-common-525-server 525.60.13-0ubuntu0.20.04.1 all Shared files used by the NVIDIA libraries ii libnvidia-compute-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA libcompute package ii libnvidia-decode-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA Video Decoding runtime libraries ii libnvidia-encode-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVENC Video Encoding runtime library ii libnvidia-extra-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 Extra libraries for the NVIDIA Server Driver ii libnvidia-fbc1-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA OpenGL-based Framebuffer Capture runtime library ii libnvidia-gl-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD ii nvidia-compute-utils-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA compute utilities ii nvidia-dkms-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA DKMS package ii nvidia-driver-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA Server Driver metapackage ii nvidia-kernel-common-525-server 525.60.13-0ubuntu0.20.04.1 amd64 Shared files used with the kernel module ii nvidia-kernel-source-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA kernel source package ii nvidia-utils-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA Server Driver support binaries ii xserver-xorg-video-nvidia-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA binary Xorg driver [chuck@lizum ~.2001]$ ``` It lists as : ```auto [chuck@lizum ~.2001]$ nvidia-smi Wed Mar 8 01:13:00 2023 +-----------------------------------------------------------------------------+ | NVIDIA-SMI 525.60.13 Driver Version: 525.60.13 CUDA Version: 12.0 | |-------------------------------+----------------------+----------------------+ | GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. | | | | MIG M. | |===============================+======================+======================| | 0 Quadro P2200 On | 00000000:07:00.0 Off | N/A | | 48% 38C P8 4W / 75W | 4MiB / 5120MiB | 0% Default | | | | N/A | +-------------------------------+----------------------+----------------------+ +-----------------------------------------------------------------------------+ | Processes: | | GPU GI CI PID Type Process name GPU Memory | | ID ID Usage | |=============================================================================| | No running processes found | +-----------------------------------------------------------------------------+ [chuck@lizum ~.2002]$ ``` ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 8, 2023, 6:47am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/4 "2023-03-08T06:47:58Z")
Super psyched there’s a fix almost here! Many thanks! I was only attempting to switch the active cuda version, not revert drivers. But I’ll be the first to admit I was just trying random stuff. I don’t think it matters, but I’m on RedHat Enterprise Linux for this. I use Ubuntu too, so very useful regardless. ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [March 8, 2023, 8:04am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/5 "2023-03-08T08:04:01Z")
It doesn’t matter which flavor you use as long as all the required pieces are there. I used DKMS on Fedora just as much as I use it now on Ubuntu. There are some things that “just work better” when the critical modules are recompiled / relinked on the fly to match the specific kernel version. The Nvidia drivers are one such case. ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 8, 2023, 1:05pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/6 "2023-03-08T13:05:08Z")
I use a repository for cuda. I haven’t had to recompile anything yet as I believe the kmod packages are required to be used with specific kernel versions. Every once in a while I update the system before the nvidia kmod package has been updated; I have to use the --best flag with dnf so it doesn’t try to install the latest kernel packages. Otherwise, it can’t resolve all the dependencies for the nvidia driver. I guess it can be using dkms during the package install process, but I haven’t had to compile anything yet and everything works flawlessly. I’m happy sticking with the limitation of using the repositories. If I run into an issue where I need to switch drivers, then dkms-land it is. ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [March 8, 2023, 4:21pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/7 "2023-03-08T16:21:31Z")
you don’t use the CUDA which comes with the driver ? Nvidia is very good about us not having to compile anything by hand. All my kmod are done by DKMS automatically. I never need to touch it. I have to dig to see that there was a compile underneath to build the new ko file. Which kernel version are you using? ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 8, 2023, 5:45pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/8 "2023-03-08T17:45:19Z")
Oh, cuda comes with the driver, or vice versa. Sorry if I’m being confusing 🙂 Everything comes from the official repository. But there are several versions of cuda on my system (11.7,11,8,12.0,12.1) so I assume they all work with my current driver version. To be clear, I’m not having any issues other than waiting for the 1080p transcode bug to be fixed. But since you asked: [josh@Odin ~]$ uname -a Linux Odin 5.14.0-162.18.1.el9\_1.x86\_64 #1 SMP PREEMPT\_DYNAMIC Thu Feb 9 04:28:41 EST 2023 x86\_64 x86\_64 x86\_64 GNU/Linux [root@Odin ~]# update-alternatives --display cuda cuda - status is manual. link currently points to /usr/local/cuda-11.7 /usr/local/cuda-11.7 - priority 117 /usr/local/cuda-11.8 - priority 118 /usr/local/cuda-12.0 - priority 120 /usr/local/cuda-12.1 - priority 121 Current `best’ version is /usr/local/cuda-12.1. [root@Odin ~]# nvidia-smi Wed Mar 8 12:42:57 2023 ±--------------------------------------------------------------------------------------+ | NVIDIA-SMI 530.30.02 Driver Version: 530.30.02 CUDA Version: 12.1 | |-----------------------------------------±---------------------±---------------------+ This is the repo I use (and why I called it a cuda repo) [developer.download.nvidia.com/compute/cuda/repos/rhel9/x86\_64](http://developer.download.nvidia.com/compute/cuda/repos/rhel9/x86_64) ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [March 8, 2023, 11:36pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/9 "2023-03-08T23:36:58Z")
> [@aeeaan](#): > > Everything comes from the official repository. Whose official repository? In Ubuntu’s case, they provide everything together with all the dependencies assigned as per nvidia requirement. If you have multiple cuda versions on your host, You have to stop that. Pick one and stay with it. You’re making an unsupportable mess otherwise. To transcode with Nvidia GPUs on Plex, you need a unified Nvidia library. It must be CUDA 11.7 or higher with matching drivers This is my combination production and Plex test/development machine. There is only one version. ```auto [chuck@glockner local.2001]$ dpkg -l | grep 525 ii libnvidia-cfg1-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA binary OpenGL/GLX configuration library ii libnvidia-common-525-server 525.60.13-0ubuntu0.20.04.1 all Shared files used by the NVIDIA libraries ii libnvidia-compute-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA libcompute package ii libnvidia-decode-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA Video Decoding runtime libraries ii libnvidia-encode-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVENC Video Encoding runtime library ii libnvidia-extra-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 Extra libraries for the NVIDIA Server Driver ii libnvidia-fbc1-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA OpenGL-based Framebuffer Capture runtime library ii libnvidia-gl-525-server:amd64 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD ii nvidia-compute-utils-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA compute utilities ii nvidia-dkms-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA DKMS package ii nvidia-driver-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA Server Driver metapackage ii nvidia-kernel-common-525-server 525.60.13-0ubuntu0.20.04.1 amd64 Shared files used with the kernel module ii nvidia-kernel-source-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA kernel source package ii nvidia-utils-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA Server Driver support binaries ii xserver-xorg-video-nvidia-525-server 525.60.13-0ubuntu0.20.04.1 amd64 NVIDIA binary Xorg driver [chuck@glockner local.2002]$ ``` Everything from Xorg display server through encode-decode libraries are all the same release. ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [March 8, 2023, 11:44pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/10 "2023-03-08T23:44:17Z")
Separate note: I’m downloading 9.1 now and standing up a VM so I am fully up to speed on what’s offered by 9.1 ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 8, 2023, 11:51pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/11 "2023-03-08T23:51:38Z")
Everything I have is managed by system dependencies written by nvidia into their RPM packages. It works quite well, I’ve yet to run into any kind of conflict. There’s only ever 1 kmod /driver installed at any time, the previous version is always wiped, but multiple cuda versions don’t bother each other off in their isolated directories. Between the nvidia and plex repositories, i have to do very little manual software maintenance on this machine. As I mentioned earlier, sometimes nvidia falls a little behind and I can’t install the latest kernel but it doesn’t last long and has yet to cause me any real headache. I probably tacked this onto my last message after you had already read it Repo: [developer.download.nvidia.com/compute/cuda/repos/rhel9/x86\_64](https://developer.download.nvidia.com/compute/cuda/repos/rhel9/x86_64) ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 8, 2023, 11:54pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/12 "2023-03-08T23:54:33Z")
If you need a license, developer licenses are free these days 🙂 It’s kind of a combo dev/personal license that they added after they killed the downstream CentOS releases. I forget how many you get, but I’ll never need all the licenses they gave me. Totally legit, plex doesn’t need to pay afaik. ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [March 8, 2023, 11:56pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/13 "2023-03-08T23:56:12Z")
I have a developer license. I pulled 9.1 I’m getting this: `CPU has been disabled by the guest operating system’. Obviously I’ve done something stupid in vmware. Thoughts ? ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 8, 2023, 11:59pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/14 "2023-03-08T23:59:27Z")
Lost on that one. Sounds like it could be a kernel panic? I can’t imagine RHEL isn’t working on vmware, that’d be absurd. Older version maybe? [https://kb.vmware.com/s/article/2000542](https://kb.vmware.com/s/article/2000542) ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 9, 2023, 12:03am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/15 "2023-03-09T00:03:29Z")
Oh, i never mentioned that I’m not running a GUI. I think it must make dealing with all the driver stuff much much easier. It’s why I didn’t install one to begin with. Kind of a key piece of info I forgot to mention… ---
**Author:** ![ChuckPa](https://sea1.discourse-cdn.com/plex/user_avatar/forums.plex.tv/chuckpa/32/79710_2.png) [@ChuckPa](https://forums.plex.tv/u/ChuckPa)\ **Post date:** [March 9, 2023, 12:21am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/16 "2023-03-09T00:21:29Z")
I’ll grab the server iso. It is absurd that RHEL and vmware argue. When all else fails – don’t use a GUI ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 9, 2023, 12:31am UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/17 "2023-03-09T00:31:00Z")
So true. I initially tried Ubuntu budgie but I didn’t know how to get everything installed correctly driverwise. Then I switched to Windows, which worked great, but didn’t have the tone mapping hw transcode support (at the time anyway) and I really wanted that. RHEL server was my third install, and it was just right 🙂 Everything has just worked for me here and it’s made me love plex all the more 🙂 ---
**Author:** ![aeeaan](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@aeeaan](https://forums.plex.tv/u/aeeaan)\ **Post date:** [March 10, 2023, 6:58pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/18 "2023-03-10T18:58:28Z")
Just to circle back… The bug does seem to be fixed for me in 6783 Also, I thought you might find this interesting…nvidia has their redhat repository set up with application streams. It should make bouncing around between driver versions relatively painless, just a few dnf commands. I expect rhel 8 works the same. I’m set to dkms latest. I think pegging a version is a matter of uninstalling, setting a different stream for the nvidia-driver module, and installing again. (I haven’t tried it since everything is working for me on latest afaik.) dnf module list nvidia-driver Updating Subscription Management repositories. Last metadata expiration check: 0:06:18 ago on Fri 10 Mar 2023 01:43:45 PM EST. cuda-rhel9-x86\_64 Name Stream Profiles Summary nvidia-driver latest default [d], fm, ks, src Nvidia driver for latest branch nvidia-driver latest-dkms [d][e] default [d], fm, ks Nvidia driver for latest-dkms branch nvidia-driver open-dkms default [d], fm, ks, src Nvidia driver for open-dkms branch nvidia-driver 515 default [d], fm, ks, src Nvidia driver for 515 branch nvidia-driver 515-dkms default [d], fm, ks Nvidia driver for 515-dkms branch nvidia-driver 515-open default [d], fm, ks, src Nvidia driver for 515-open branch nvidia-driver 520 default [d], fm, ks, src Nvidia driver for 520 branch nvidia-driver 520-dkms default [d], fm, ks Nvidia driver for 520-dkms branch nvidia-driver 520-open default [d], fm, ks, src Nvidia driver for 520-open branch nvidia-driver 525 default [d], fm, ks, src Nvidia driver for 525 branch nvidia-driver 525-dkms default [d], fm, ks Nvidia driver for 525-dkms branch nvidia-driver 525-open default [d], fm, ks, src Nvidia driver for 525-open branch nvidia-driver 530 default [d], fm, ks, src Nvidia driver for 530 branch nvidia-driver 530-dkms default [d], fm, ks Nvidia driver for 530-dkms branch nvidia-driver 530-open default [d], fm, ks, src Nvidia driver for 530-open branch Hint: [d]efault, [e]nabled, disabled, [i]nstalled ---
**Author:** ![system](https://global.discourse-cdn.com/plex/original/3X/2/a/2acb9765406f63293d357b4ec509ec39aa28f2ad.png) [@system](https://forums.plex.tv/u/system)\ **Post date:** [June 8, 2023, 6:59pm UTC](https://forums.plex.tv/t/hardware-transcodes-for-1080p-do-not-work/833778/19 "2023-06-08T18:59:26Z")
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