@ChuckPa sorry, to clarify I am asking because of the issues I am having with 720p x265 transcoding that we’ve covered in another thread and you suggested are on Intel to fix, here: Poor image quality when HW Transcoding HEVC 1080p content to 720p
I probably should have asked for an update there but I thought as more people were following this thread any update would be better shared here.
Hopefully the fix is progressing.
I keep monitoring Intel’s release board.
That’s unfortunately all anyone can do.
I’m sorry to assert the need for this workaround and , maybe, on those impacted systems, I could implement the patch automatically so it’s not visible to anyone.
Might that be an option if I were to implement the workaround in the packaging?
My opinion: It would be great if you could do that.
Not every person with a DS920+, etc knows about the driver problem. Implementing the patch during installation would make for happier customers.
Hi There. ChuckPa thanks for your fantastic workaround solution. It worked for my DS920+ and I finally started watching 4k videos without any problems on the web or on my SmartTV. Let’s hope that Intel should be able to release a proper fix sooner rather than later.
Dear ChuckPa,
I have a DS920+ and your fix helped me a lot - thanks for that!
But suddenly it stopped working. 4k videos started to cause problems since about two weeks.
I have a 10MBit Upload line and when transcoding 4k the NAS only manages to upload 4Mbit. Also the CPU Usage is pushed to 60%.
I remember that a few weeks ago the CPU was 10-15% when transcoding 4k - now back to 60%.
I checked the Preferences.xml and the added string VaapiDriver="i965" is still in there.
Any ideas?
.
Try to turn off HDR tone mapping. Synology native app doesn’t support HW tone mapping yet and its done by CPU which in your case is not powerful enough.
I had same issues and switch to linuxsever.io docker image because it has full HW acceleration support.
Btw. vaapidriver preference is no longer needed.
That’s correct.
VaapiDriver="i965" isn’t needed on any J4xxx CPU (DSx20+).To speak to that 62% loading, that’s telling me you’re getting software HDR (without OpenCL). I’m not surprised and is because of the above.
HDR tone mapping requires additional runtime libraries that allow the GPU (not the transcoding ASIC) to perform the color mapping work.
VaapiDriver still needed here. Tried removing it, and a 4K HEVC was unwatchable when transcoding down to 720p, whilst the same file was perfect when VaapiDriver was reinstated.
PMS Version 1.21.0.3711
DS 920+
I need details please; preferably logs which capture the playback attempt. That statement can’t be taken in isolation.
I repeated exactly what I did before, that is, stop PMS, remove VaapiDriver from preferences and restart PMS so I could transcode the same file and generate some logs for you.
And it worked perfectly. Thanks anyway for the offer of help!
You are a Champion!
Thank you. After unticking the HDR tone mapping everything smooth again.
I also removed the i965 driver fron the file - so all smooth sailing from now on!
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