Samsung Q950R with Synology DS218+ cannot stream 4K videos

Plex Players Smart TVs
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Server Version#: 1.21.3.4021
Player Version#: 5.8.1

Hi,
i have seen this problem a couple if times in this forum, but i could not take advantage of it to troubleshoot my situation. I have my NAS connectec via cable to my Q950R, whenever i try to play 4K videos, it has to buffer inbetween. I enabled direct play and direct stream on my client, i disabled the bitrate limit. On the server, i deactivated transcoding. The files which are stuttering are .mp4 or .mov, bitrates from 94.1-101mbps, video is in h.264, sound in AAC. Ethernet ports are all Gigabits.

How can i identify my bottleneck? Do i have to change my settings?

Thanks

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I’m relatively sure that this TV doesn’t have Gbit Ethernet, but only Fast Ethernet (100Mbit/s).
If your router is close and has 5GHz WiFi, try using that.

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  1. Avoid 4K files with H.264/AVC video codec. HEVC/H.265 was invented for a reason, namely proper 4K support.
  2. if the average bitrate is close to 100 mbps, you can bet that there are peaks in the bitrate which go way above 100 mbps.
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Wow you are right, i am sorry - i thought that was a Gbit port. I’ll try the 5Ghz Wifi!

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Since my older TV could not handle H.265 i had to render them in H.264, this tv is brandnew (thats why i also thought it had a Gbit Ethernet :D). But yes, if i’ll render a new project it will be H.265

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Worked instantly with the 5Ghz WiFi, i am pretty shocked that it really does not have a Gbit Eth Port :smiley: Thanks for the instant support and for the “eye-opener”

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There are USB to GBit Ethernet adapters. Some have been reported to work on those TVs.

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Since my router is close, i think it should not be a problem. The USB ports are (wtf!!!) 2.0, so max. speed would be 480Mbps, i’ll check what the avg. speed via WiFi is and consider buying one. Thanks!

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That should be plenty, compared to the 100 mbps of the built-in Ethernet port.

The problem can arise, if the number of WiFI devices in your own and your neighbours’s WiFi grows.
WiFi is a “shared” medium. Technical trickery (like “MU-MIMO”) can work around this fact somewhat, but cannot negate it completely.
If all your wireless bandwidth is occupied by your tv, there might be less available for other clients at the same time.
Therefore, IMHO you should aim for “wired” whenever possible.

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ok thank you! i’ll give it a try!

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