Server Version#: 1.19.5.3112
Player Version#: Multiples
Hi everyone !
First, here’s my config.
OS: Ubuntu 19.10
CPU: 2x Intel Xeon CPU E5-2640 v3 (32 Cores)
RAM: 32GB DDR4
Internet: 1gbps/700mbps
Client: Chrome, Roku, Roku TV, Plex App (Windows), Android
I first came here for basically the same issue (here).
But, based on ChuckPa’s information I changed a few things. I don’t have any HEVC (x265) movies anymore and I don’t use any Burn subtitles. But I still have poor transcoding performance and I don’t know why. My friend has the exact same server as me and he can have 8-10 (1080P) stream transcoding without an issue. In the older thread, ChuckPa mentioned that could be a network issue.
Below, you can see my Plex server’s logs at the exact moment where one of my movie was buffering (War of the planet of the apes).
It looks like you’re streaming your videos through a Plex relay… that’s indeed limiting your bandwidth to 1 Mbps (2 Mbps for Plex Pass members). This is usually related to a bad remote access setup when your clients cannot establish a direct connection to your server and therefore route their traffic through a “stepping stone” server of Plex.
This kind of streaming restriction could also be based on your client configuration (e.g. if you limited video streaming quality to 720p (@2 Mbps).
On a side note… it appears your server tries to load some CUDA drivers for hw-accelerated transcoding but fails to do so. That should however not impact the given situation as your processor seems to be powerful enough to handle those videos – even if it requires transcoding.
according to your log, the video is being transcoded
(a) because direct play is disabled on your client
(b) the media characteristics are beyond what the client will play directly (e.g. video height is 1088 pixels while the device only supports 1080 pixels max; apparently the client also tells Plex it won’t play AC3 but asks the audio to be transcoded to AAC)
Simply looking at your CPU’s passmark score, it should be ok to transcode that video ok (score is 13000+, transcode for a 1080p should require something in the range of 2000). According to the logs the expected bitrate of the video should be below 4 Mbps – that should not be an issue for your home network.
