I7-8086k - 5Ghz CANT HW TRANSCODE?!?!? WTF

[nfmain]

Server Version#: 1.13 (latest as of Oct 2)
Player Version#: Latest in firefox

So I found out today that one of the perks of my plex pass is letting my cpu transcode prettier videos, after all, why not, it is a top of the line CPU. 8th gen, i7, 8086k (better than 8700k) 5ghz.

So I tried to transcode a 4k remux video 10bit, and I didn’t get the (HW) next to the info meaning the transcode didn’t work. Tried a few, same situation.

So I tried to transcode 1080p down, see if it worked, and same thing, didn’t work.

Then I googled and came across these 3 links:

Transcoding not working

I am unable to stream video over the Plex Web interface. I believe my transcoder is not working. I am able to stream music. Streaming works fine on my smart TV (I believe it is direct streaming). Also, on my smart TV, I was unable to stream a video with incompatible audio, and I am not getting the audio boost when I manually select Transcode. All of this makes it look like a transcoding issue to me. I am running Plex 1.1.3.2700 on Win10 (Recently upgraded from Win7). At first I thought it …

Hardware Transcoding Not Working? Maybe?

So, interesting enough, i remade the MKV Files with just the some random SRT and the Video and Audio. (see below) Rescanned the Library, and when I played (no subtitles) there was NO GPU transcoding… all CPU, which I don’t understand at all. When I enabled the Subtitles, with the SRT, it started transcoding with the GPU, no problems. Attached are the logs [52%20PM] Plex Media Server Logs_2018-07-04_15-12-44.zip (211.8 KB)

Transcode not working (hardware and software)

Hello, i updated synology to last version, i removed PMS and reinstalled again to enable hardware transcoding, the problem now if i need to transcode something i get playback failed on kodi addon or shaka1001 error on plex web

Turns out I need subtitles off for HW transcoding to work??? Dumb in 2018 but ok, disabled subtitles. 4k still didn’t work. Might be due to the 10bit color cammut in the 4k HDR?

Went back to 1080p video, and BEHOLD it works… (I can see the HW next to it) – except the problem is the video is INSANELY CHOPPY!!! I told it to transcode to 10mbps, and its stuttering every 3-4 seconds, its like missing frames and its blatantly evident.

I tinkered with the settings under transcoder, changed the throttle from 60 to 90 to 120 to 30, no luck.
Changed quality to: Auto, high speed, high quality, and make cpu hurt, didn’t matter - still choppy. Changed background transcoding from very fast to slower to faster to fast, back to very fast. Didn’t work.

Only thing that gives me smooth playback is disabling the checkbox that enables HW acceleration to begin with.

What gives???

Thing is: my UL speed is limited to 35mbps, so if I share my 4k library, my 8086k dies (apparently without HW encoding, transcoding 1 4k video with 80mbps source down to 10-20mbps) = 65% of my cpu power being used. So basically, if 2 people try to transcode 4k videos = game over.

Am I doing something wrong?

Other specs: 16GB 3000mhz DDR4 ram.
Discreet GPU: r9 280 from 2014 (old gaming card I no longer use)

Help!

[wesman]

@nfmain

Turns out I need subtitles off for HW transcoding to work??? Dumb in 2018 but ok, disabled subtitles. 4k still didn’t work. Might be due to the 10bit color cammut in the 4k HDR?

The limitation on the Transcode with Subtitles is a FFMPEG issue, they do not support it (yet), therefor anyone that uses them for transcoding, is limited as well.

I am guessing that it’s the Audio that is giving you fits. I have run across this several times, I don’t know what causes it. if your files has different Audio’s AAC or AC3 try those while transcoding (without subtitles) and see if that helps.

If you don’t have different formats of Audio, create an “Optimized” version of the 4K video, then use MKVMerge to put that audio into the orginal file, then try it.

This has solved my problem in the past with the “buffering every few seconds”