Install the app
How to install the app on iOS

Follow along with the video below to see how to install our site as a web app on your home screen.

Note: This feature may not be available in some browsers.

DSM 7.0 Plex x265 HEVC issue

As an Amazon Associate, we may earn commissions from qualifying purchases. Learn more...

73
23
NAS
DS920+
Operating system
  1. Windows
Mobile operating system
  1. Android
Good evening :)

When we try watch the 4K HEVC/x265 video, they seem to buffer quite a bit. Running this on a DS920+, any fix or way to help the NAS process these videos? I do have Plex pass with transcoding enabled.

If not, do I just have to play 1080p videos? :(

Thanks for the help!
 
Good evening :)

When we try watch the 4K HEVC/x265 video, they seem to buffer quite a bit. Running this on a DS920+, any fix or way to help the NAS process these videos? I do have Plex pass with transcoding enabled.

If not, do I just have to play 1080p videos? :(

Thanks for the help!
Video Station transcode that format and therefore the quality became really bad.
But I don't know with Plex..
 
Good evening :)

When we try watch the 4K HEVC/x265 video, they seem to buffer quite a bit. Running this on a DS920+, any fix or way to help the NAS process these videos? I do have Plex pass with transcoding enabled.

If not, do I just have to play 1080p videos? :(

Thanks for the help!
Do you have HW transcoding active? Also, if your are trasncoding 4K back to 4K, that will be task an a half. Best to stream 4K as native (if supported by the client side), or push that 4K down to 1080p (again trasncode) and watch it that way.

Post a screen from the Plex server dashboard while this streaming is happening so we can see whats going on with video, audio or subtitles.
 
Do you have HW transcoding active? Also, if your are trasncoding 4K back to 4K, that will be task an a half. Best to stream 4K as native (if supported by the client side), or push that 4K down to 1080p (again trasncode) and watch it that way.

Post a screen from the Plex server dashboard while this streaming is happening so we can see whats going on with video, audio or subtitles.
Cheers mate, I'll get a screenshot ASAP when I get home.
 
Do you have HW transcoding active? Also, if your are trasncoding 4K back to 4K, that will be task an a half. Best to stream 4K as native (if supported by the client side), or push that 4K down to 1080p (again trasncode) and watch it that way.

Post a screen from the Plex server dashboard while this streaming is happening so we can see whats going on with video, audio or subtitles.

Does this help mate?

The resources screenshot was me then playing a 1080p video too.
 

Attachments

  • Capture11.webp
    Capture11.webp
    4.4 KB · Views: 198
  • Capture25.webp
    Capture25.webp
    14.5 KB · Views: 199
I don't see Plex transcoding there. Is your Firestick running on Wi-Fi? That can cause buffering.
 
Last edited:
@Telos is 110% correct. 4k (especially uncompressed UHD) requires a wired 1GBE connection - and unfortunately, for reasons unknown AMZ devices only support 10/100 connectivity and they have a small amount of RAM which is another bottleneck. You would be best off running the Plex client on an Nvidia Shield or Shield Pro....
 
Ahhh, I can plug the Firestick into a 1G connection, let me give that a bash!
[automerge]1637093879[/automerge]
Feel like such an idiot :ROFLMAO:
 
Ahhh, I can plug the Firestick into a 1G connection, let me give that a bash!
[automerge]1637093879[/automerge]
Feel like such an idiot :ROFLMAO:

You are not - I struggled with this for the better part of 6 months. I really do like the Firestick - works great with anything up to 1080p, just struggles with 4k. There are supposedly 3rd party 1 GBE usb nics that will work, but RAM then becomes your secondary hurdle.
 
Last edited:
You are not - I struggled with this for the better part of 6 months. I really do like the Firestick - works great with anything up to 1080p, just struggles with 4k. There are supposedly 3rd party 1 GBE usb nics that will work, but RAM then becomes your secondary hurdle.
Well, I am debating on adding more RAM to my NAS, just stuck on which RAM to add, don't want to pay Synology outrageous prices.

Be nice if we could watch 4K on the TV in the lounge but I haattteee buffering :D
[automerge]1637095440[/automerge]
Here's me trying to play a 4K movie on my PC which is hard wired in at 1Gbps. Still buffers.

Would adding NVME cache and/or more RAM help at all? Or is this simply the limitations of this CPU?
 

Attachments

  • Capture.webp
    Capture.webp
    5.4 KB · Views: 58
Is the NAS running on a 1 GBE network? When playing back movies - check the DSM resource monitor. Do you see CPU or RAM maxed out?

3rd party RAM will work btw - DSM may complain about it, do your research.
 
Here's me trying to play a 4K movie on my PC which is hard wired in at 1Gbps. Still buffers.
Now you are transcoding. But it appears as Wi-Fi ??? as "56 Mbps" refers to what exactly?
 
Is the NAS running on a 1 GBE network? When playing back movies - check the DSM resource monitor. Do you see CPU or RAM maxed out?

3rd party RAM will work btw - DSM may complain about it, do your research.
Indeed running on 1Gbp/s network, PC to switch to NAS. Resource monitor shows nothing being "maxed out", which is odd.

Now you are transcoding. But it appears as Wi-Fi ??? as "56 Mbps" refers to what exactly?

Not sure how cause I am on network on my PC to the NAS, not sure why it is stuck at 56Mbps.
[automerge]1637103734[/automerge]
I do have a Bond network profile going via "Adaptive load balancing", that won't affect anything will it?
 

Attachments

  • 1.webp
    1.webp
    36.3 KB · Views: 35
  • 2.webp
    2.webp
    25.6 KB · Views: 35
Are you willing to share the exact file in question (maybe in private) if this is a public file at all? Would like to test this out on my end as well. From all of it this is stressing your NAS but not in a way that it should result in buffering. So something else is a problem here.

Would adding NVME cache and/or more RAM help at all? Or is this simply the limitations of this CPU?
Well RAM as the graph is showing is not a problem, as well as your volume and HDD. So I wouldn't say that would be a problem at all. Still, saying this, I have several Plex server that could be tested for this particular file, both with and without nvme cache with one gen older CPU (918).
 
Not sure @Sly870 manage to resolve the issue.

I have similar problem. I have Plex Pass and my PMS running on DS920+ buffering a lot. I tried PMS both as DS package and docker (linuxserverio and plex images). My client is NVIDIA shield and all devices are connected on 1GB/s wired connection. When I tried to access PMS from internet (mobile), I am able browse my contents in PMS but it is not play anything (stuck with loading). I checked PMS and Synology resources and looked normal.

I have another brand NAS and it plays the video smoothly on local network and remote (mobile).

I cant figure out whats causing the buffering issue with Synology
 
I cant figure out whats causing the buffering issue with Synology
How does PMS report those problematic streams inside the dashboard? What's happening with vide, audio and subs in that case? is PMS reporting hardware transcoding?
 
How does PMS report those problematic streams inside the dashboard? What's happening with vide, audio and subs in that case? is PMS reporting hardware transcoding?
Yes it says hardware transcoding. I tried to get it direct play somehow it is not allowing. even tried to disable hardware acceleration option PMS.
 
Yes it says hardware transcoding. I tried to get it direct play somehow it is not allowing. even tried to disable hardware acceleration option PMS.
So are you pushing 4K content with some transcoding back to 4K again or what? In that case almost no device will work smooth.
 
So are you pushing 4K content with some transcoding back to 4K again or what? In that case almost no device will work smooth.
I am trying to get the Plex to play 4K directly. NVIDIA Shield should be able to handle 4K as it is.
 

Create an account or login to comment

You must be a member in order to leave a comment

Create account

Create an account on our community. It's easy!

Log in

Already have an account? Log in here.

Popular tags from this forum

Similar threads

I've a mind to update to 1.40 on the backup DS218+ since, other than directing Hyper Backup and some...
Replies
12
Views
5,061

Thread Tags

Tags Tags
plex

Welcome to SynoForum.com!

SynoForum.com is an unofficial Synology forum for NAS owners and enthusiasts.

Registration is free, easy and fast!

Trending content in this forum

Back
Top