Server Version#: 1.18.7.2457-77cb9455c on CentOS 7
Player Version#: 4.27.1
When I play some UHD movies, the Plex app stutters or crashes. I can successfully play those same UHD movies on my Sony X700, so I know the format is correct. Both the LG and Sony devices are connected to the same GigE edge switch with a GigE connection to my core switch. My file server and Plex server are both connected to that same core switch.
I have the logs for this. Please tell me where to send/put them.
Attach the entire zip file to your post. Use the upload button. Alternately, drag the file into the compose window. It will insert where the cursor is located.
Transcoding?
What is displayed in the Plex Dashboard during playback of one of the problematic movies?
Play a movie with Dolby Digital audio and subtitles disabled. It should direct play.
For Plex SmartTV apps:
I checked the network connections. Both the LG (TV) and Sony (Blu-Ray player) devices are connecting to the edge switch at 100Mb/S, so it’s not an issue with the physical network.
As per the Plex Dashboard, there is no transcoding. The DLNA server is being used for both devices.
The actual Plex server is an Intel i5-8259U (Intel NUC8i5BEH) with 16GB of memory. That’s not enough CPU power to do a transcode on 4K/UHD, but it’s running at under 5% most of the time its playing this movie (~10% for initial buffering). The DLNA server takes up a huge amount of memory, but I assume it’s smart enough to respond to memory pressure from other processes, and shrink as needed.
Logs: Plex Media Server Logs_2020-03-10_13-47-04.zip (7.2 MB)
Thanks for the info.
The Plex LG client does not use DLNA.
I did not see any issues in the logs when playing Nim’s Island or Return to Nim’s Island.
When playing Mission Impossible the video is transcoding. This can cause stuttering/buffering.
It looks like PGS subtitles are enabled and TrueHD audio is selected.
Keep in mind the limitations of the Plex SmartTV client:
When using the Plex LG client, you should avoid TrueHD audio, as it is not supported by the TV. TrueHD audio will be transcoded by the Plex server, and this will force a video transcode if subtitles are enabled. When possible, choose Dolby Digital or dts audio.
Try playing Mission Impossible with subtitles turned off and, if available, with a Dolby Digital or dts audio stream.
When playing Mission Impossible the Video is transcoding.
The server says it’s “Direct Stream”. That shouldn’t be transcoding.
The subtitles are turned off (not being displayed). If the video were transcoding, the server CPU would be pegged (my understanding is that the transcoding is done in the Plex server). It’s not.
The small bump is the initial buffering.
When the movie gets to about 2 minutes in, the TV reboots. Regardless of what the video stream is doing, If the Client can cause a reboot of the entire TV, its a bug. The Client code needs to recognize an impending problem and notify the server that something (probably bit rate) needs to change.
Somebody from Plex needs to get involved, given that the TV is rebooting.
I’ve a B7 OLED with Plex app v4.27.1. Mission Impossible buffers, but does not crash the app or reboot the TV. The buffering is due to the high video bitrate and using the 100 Mbps Ethernet port on the TV. It buffers whether I choose the TrueHD or AC3 audio tracks.
Hopefully one of the Ninjas/employees/developers will pick up on this thread.
The buffering is due to the high video bitrate and using the 100 Mbps Ethernet port on the TV. It buffers whether I choose the TrueHD or AC3 audio tracks.
I have no problem with the buffering. In fact, I expect it. The app should always try to stay ahead by a bit, as there can be quite a bit of latency getting the next chunk of the movie, and the app doesn’t know ahead of time exactly what the bit-rate is for a given segment (I believe the 89 in the image is the average bit-rate).
I just checked the specs on the TV. It claims to have 802.11AC, which I disabled. If this is dual-band, it might be faster and allow everything to work better. Does anyone KNOW if this is single-band (2.4GHz only) or dual-band (2.4 & 5 GHz)? Has anyone tried to stream high-bandwidth movies like this through the wireless on a UK6300?
Hopefully one of the Ninjas/employees/developers will pick up on this thread.
Agreed. Is there any way to trigger that?
802.11ac is specific to 5 GHz wifi. The 2.4GHz radios use 802.11n.
I could not find detailed tech specs on the wi-fi radios in my B7. However, when on 802.11ac, it is definitely faster than the 100 Mbps Ethernet port. I’m guessing it has a single stream radio, which would max out at 433 Mbps (raw rate, actual throughput will be less).
Mission Impossible did not buffer during playback when using 5GHz wi-fi instead of Ethernet.
My ASUS router showed a connection speed of 335 Mbps.
Using the TV’s Netflix app, I ran a network test (runs a speed test to Netflix servers). It measured around 125 Mbps over several runs. This at least shows the Wi-Fi connection is faster than the Ethernet port for my installation.
OK. As a test of a possible workaround, I’ll connect the TV to the wireless and see how it works. I should have time for this test by Friday.
I’d still like to get the devs involved so that the underlying issue can be addressed.
I’ll connect the TV to the wireless and see how it works.
Not well enough. The Plex Client on the TV still crashes.
Same issue here. This Plex Client for WebOS is crashing every time.
Plex Media Server: 1.19.1.2645
Plex for LG: 4.29.2
WebOS: 2.2.0
Obs: wired TV connection, not wireless!
Please, fix it.
I just noticed this happening too on my LG.
True HD audio with PGS subtitles.
These used to buffer indefinitely or stutter and I could go back to the home screen, but now just crashes the server completely and I have to reopen PMS.
Disabling subtitles allow it to play, but I would prefer the file not crash the whole server as I have roommates in the house and I am not always home to restart PMS. I guess I could remote in, but it is pretty annoying.
just crashes the server
Disabling subtitles allow it to play
That’s a different problem. When you enable the subtitles, it probably starts transcoding and you don’t have enough CPU power to do it in real-time.
Back to the original thread.
There was a software update on my TV and this is happening on other, lower bitrate, 4K movies. How do we bring this to the attention of the developers?
My collection of ripped 4K movies has expanded, and I’ve noticed that the PLEX Application, and sometimes the entire TV, crashes with lower bit-rate movies. This is a pain.
What will it take to get someone to look at the implementation of the LG client?
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