Pre-Encoding vs Transcoding

[VirulentPip 93]

Ohh yeah good idea will try that in a minute.. The A380 has overidden all QSV stuff for transcoding, no option for the UHD 770, which I want to use

[VirulentPip 93]

36 minutes ago, rbjtech said:

Does the file direct play if you play it via a USB stick attached to the C1 ?

Plays back via USB. 

[VirulentPip 93]

Yikes, 1 stream is using up to 35% CPU (i5 12600K) Utilisation during throttle off moments. Really gonna need that AV1 HW Decode option to make this viable

[rbjtech 5284]

17 hours ago, VirulentPip said:

Ohh yeah good idea will try that in a minute.. The A380 has overidden all QSV stuff for transcoding, no option for the UHD 770, which I want to use

Make sure you have it enabled in the BIOS - by default, a PCIe card will disable the iGPU ..

Edited October 1, 2022 by rbjtech

[VirulentPip 93]

Just now, rbjtech said:

Make sure you have it enabled in the BIOS - by default, a PCIe card will disable it ..

Turns out had to put HDMI into motherboard, all good now. Emby using UHD 770 and Handbrake the A380. Now to just get AV1 HW Decode setting added to save my CPU 

[rbjtech 5284]

3 minutes ago, VirulentPip said:

Turns out had to put HDMI into motherboard, all good now. Emby using UHD 770 and Handbrake the A380. Now to just get AV1 HW Decode setting added to save my CPU 

If you have the time - it would be interesting doing a direct like for like transcoding comparison (for h265 > h264) of the UHD770 vs A380 - with throttle turned off.

[softworkz 5066]

On 9/30/2022 at 5:34 PM, VirulentPip said:

Well after finding a sweet sport for AV1 setting around 300fps for 10bit. I then realised something which is pretty much going to make all this not worth it... Emby is decoding AV1 when needs to be transcoded in Software, there's no option for Hardware Decoding, am I missing something or is this not an option @Luke

We don't have support for hw accelerated AV1 decoding yet.

EDIT: Just for clarity - I'm talking about the server side

Edited October 1, 2022 by softworkz

[VirulentPip 93]

1 minute ago, softworkz said:

We don't have support for hw accelerated AV1 decoding yet.

Yep realised and unfortunately so Any sort of ETA? 

[softworkz 5066]

It's planned but I can't tell I don't know when it might happen. 

Edited October 1, 2022 by softworkz

[SamES 1056]

18 hours ago, VirulentPip said:

Strange thing is, the LG C1 meant to support AV1. It does.. But doesn't for the app I guess?
@SamES

 

For AV1 we rely on whether the internal video player reports it can support the format.  It might be lying about AV1, which is possible if it is working via USB.

Can you enable debug logging, play an AV1 file briefly on the TV, then attach the server log?

[VirulentPip 93]

9 hours ago, rbjtech said:

If you have the time - it would be interesting doing a direct like for like transcoding comparison (for h265 > h264) of the UHD770 vs A380 - with throttle turned off.

Yep will do some tomorrow  

 

[VirulentPip 93]

7 hours ago, SamES said:

For AV1 we rely on whether the internal video player reports it can support the format.  It might be lying about AV1, which is possible if it is working via USB.

Can you enable debug logging, play an AV1 file briefly on the TV, then attach the server log?

Roger that, will do tomorrow when logs are fresh 

[VirulentPip 93]

embyserver.txt@SamES

Edited October 2, 2022 by VirulentPip

[VirulentPip 93]

20 hours ago, rbjtech said:

If you have the time - it would be interesting doing a direct like for like transcoding comparison (for h265 > h264) of the UHD770 vs A380 - with throttle turned off.

Honestly not what I was expecting, the UHD 770 absolutely smashed the A380. Emby bugged out in the 4K with the A380 and was always triggering software not sure why, but the UHD770 with no tone mapping was 190fps. 

[rbjtech 5284]

Hmm - that seems odd.

I would have expected the ARC ASICS to at least be on par with the UHD770 for h264/h265.

The I/O architecture is however different - ARC will be reading/writing via the PCIe bus, but has 'local' dedicated memory - while the UHD will be reading/writing via an internal bus, but has 'shared' memory. 

A transcode log might reveal more on where the bottleneck is ?

This architecture works for nvenc/nvdec, so it could simply be a very unoptimized driver/ffmpeg combo that is causing the delays - as 100fps on a 1080p transcode is very poor.

[VirulentPip 93]

4 minutes ago, rbjtech said:

Hmm - that seems odd.

I would have expected the ARC ASICS to at least be on par with the UHD770 for h264/h265.

The I/O architecture is however different - ARC will be reading/writing via the PCIe bus, but has 'local' dedicated memory - while the UHD will be reading/writing via an internal bus, but has 'shared' memory. 

A transcode log might reveal more on where the bottleneck is ?

This architecture works for nvenc/nvdec, so it could simply be a very unoptimized driver/ffmpeg combo that is causing the delays - as 100fps on a 1080p transcode is very poor.

At first glance I have noticed that with the A380 only D3D9 is available. UHD 770 has both D3D9 and D3D11 - Which is what it's using for 1080p and 4K. A380 fails 4K due to being D3D9 only?

A380 1080p ffmpeg-transcode-3de12b87-e2c8-4f97-a396-d9e94d089681_1.txt A380 Failed 4K ffmpeg-transcode-b2add92c-ac5b-4696-838d-7b55b540ceaa_1.txt UHD 770 4K ffmpeg-transcode-e54b8175-1d50-4779-bd01-f5034776d10f_1.txt UHD 770 1080p ffmpeg-transcode-3be33dfc-63f2-47bc-86e4-332c3591dc30_1.txt

[rbjtech 5284]

Ah that's interesting - I don't even have any D3D9 listed at all on my emby decoders/encoders - only D3D11 (and DX11VA - which are all unselected).

I'm wondering if this is a driver issue - did you install and specific ARC drivers or just used the existing drivers ?

Edited October 2, 2022 by rbjtech

[VirulentPip 93]

Seems the latest are installed for both. 

[VirulentPip 93]

But to answer more specifically, I grabbed drivers listed for the Arc.. Seems to use the same drivers for the UHD770 as those weren't updated. But yeah, confusing that there's no D3D11 option for the A380.

[rbjtech 5284]

15 minutes ago, VirulentPip said:

But to answer more specifically, I grabbed drivers listed for the Arc.. Seems to use the same drivers for the UHD770 as those weren't updated. But yeah, confusing that there's no D3D11 option for the A380.

Fundamentally I think that is the issue here.   ARC emulates D3D9 - I'm reading it has no hardware support for it - so that is not helping performance.

But until you have a working D3D11 / Quicksync driver for the A370/ffmpeg - then I don't think you can do a 1:1 comparison.

Maybe take a look at the BETA drivers ?

https://www.intel.com/content/www/us/en/download/737144/intel-graphics-windows-dch-drivers-preview-features.html

[VirulentPip 93]

3 minutes ago, rbjtech said:

Fundamentally I think that is the issue here.   ARC emulates D3D9 - I'm reading it has no hardware support for it - so that is not helping performance.

But until you have a working D3D11 / Quicksync driver for the A370/ffmpeg - then I don't think you can do a 1:1 comparison.

Maybe take a look at the BETA drivers ?

https://www.intel.com/content/www/us/en/download/737144/intel-graphics-windows-dch-drivers-preview-features.html

Looking at the versions, this is older to the one I have which released only Tuesday (27th) 

 

[SamES 1056]

4 hours ago, VirulentPip said:

embyserver.txt 234.31 kB · 0 downloads @SamES

It looks like it's reporting not supported for AV1.

For a test, disable video transcoding in the user settings (don't forget to hit save at the bottom).

Let me know if that DirectPlays, please attach an ffmpeg log if it doesn't

[VirulentPip 93]

Came up with "Playback error No compatible streams are available" Gave 3 logs in quick succession. Fun fact I tried the 4K Max native app (Having to use the Android app for AV1 playback) with this setting and got blank screen with audio so adding in those logs too. 

 

4K Max ffmpeg-directstream-046a0c42-03fb-454e-a27c-8672830dc1c4_1.txt ffmpeg-remux-950b9ce2-bb52-4421-86d9-b15e98c15149_1.txt ffmpeg-directstream-ef9cc1e3-0791-4d73-825c-af8ff467f22e_1.txt ffmpeg-directstream-f97c01f7-b08e-4ee8-bfd6-e2aaa3c0e5f6_1.txt

Edited October 2, 2022 by VirulentPip

[SamES 1056]

5 minutes ago, VirulentPip said:

Came up with "Playback error No compatible streams are available"

Then the app is correctly reporting that av1 is not supported.  This is an LG/app limitation, not an Emby limitation.

While rare, it wouldn't be the first time I've seen files play from USB, but not from the app.

[softworkz 5066]

8 hours ago, VirulentPip said:

Looking at the versions, this is older to the one I have which released only Tuesday (27th) 

Don't go for the version numbers. 

I would try all of these three packages: