QNAP TVSh1688x and GPU GV N1650oc 4gd not recognised

  1. Yes. Anywhere you like. I look for /share/PlexData when Plex starts. I don’t care where it is. When I find it, I do resolve where it really lives myself.

  2. Correct – A or B not both.

Per the internal ASIC –

I can transcode 6 HEVC HDR 80 Mbps video streams to 1080p 20 Mbps, and audio on an i7-8809g (KabyLake CPU).

What you have is much stronger so I would expect more – 7-8-9 ?

I embarked upon this GPU journey as I was disappointed with the transcoding of 4k movies using the Xeon TVS h1688x. I had trouble even with one 4k transcode, but later worked out the thing that makes it stutter is having subtitles on (subtitle transcode). I must say, I didnt do 6 simultaneous 4k transcodes but it work flawlessly on my Samsung TV with native Plex when subtitles are off. Given what you say, I might not change the preference to GPU unless I am more likely to see better performance there.

@edmundtse_iinet.net.au

I am surprised at that. The CPU is a monster.

We have the W-1250 CPU in the NAS at HQ and it will crank through everything it is given without blinking.

Are you perhaps having performance issues with the mandated ZFS file system hampering you?

I don’t think so. I upgraded from a TS 870Pro and most of my files are still there. Tried transcoding 4k files from there and noticed some stuttering, so I tried copied a 4k file over to the TVS h1688x, thinking that the problem (as file is not on the local host). Performance was unchanged. Again, I think its the subtitle that causes the problem so far, but only been testing for about a week.

Also will monitor for performance improving once I switch to GPU, particularly with subtitle transcoding.

My i7-7700 quad core (8800 passmarks) can do 4K in hardware, subtitles in software.

The W-1250 CPU - 6 core (14001 passmarks) should have zero problems with that.
That is 75% more CPU than I have.

I’ll do some benchmarks of 4K on the Lab machine and let you know what I get.

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