Emby server + HW tanscoding

[GTsitouridis 2]

I am trying to enable HW transcoding on emby running natively on RPi 4.

But I am always getting Software -> Software.

 

I am trying to stream live TV coming from tvheadend, running on the same RPi.

Any suggestion on what I need to check?

 

Thank you

[Luke 42077]

Hi there, did you follow our hardware acceleration setup guide?

https://support.emby.media/support/solutions/articles/44001160148-hardware-acceleration-overview

[GTsitouridis 2]

3 hours ago, Luke said:

Hi there, did you follow our hardware acceleration setup guide?

https://support.emby.media/support/solutions/articles/44001160148-hardware-acceleration-overview

That's the thing. The document is not a guide rather a specification list and based on that I should be having HW Transcoding. Since I do not, I guess that I may have not done something.

My understanding is that I should be going for VA API, but how can I enable it?

[Luke 42077]

I would just select Yes for hardware transcoding in emby server transcoding settings.

If you don't think you're getting hardware transcoding, then let's look at an example:

Thanks.

[GTsitouridis 2]

When I select simply "YES" then I get playback as Software - Software

When I select "Advanced" transcoding, there is nothing checked, so I go about and check them all myself, with kind of partially HW transcoding.

[Luke 42077]

OK, let's look at an example then. Thanks.

[GTsitouridis 2]

Well.... both cases not great. Image quality is ok, but not very sharp.... its a bit smooth. Biggest problem is that in both cases playback freezes for a couple of second every few seconds.

That is SW

That is semi HW

 

[Luke 42077]

Can you please attach the log files requested in my link above? Thanks.

[GTsitouridis 2]

Ok, so I am including all logs I found under "Logs"

hardware_detection-63749544475.txtembyserver.txtffmpeg-transcode-03f0eb65-c251-46bc-9090-f26d304e85d9_1.txtffmpeg-transcode-44e88d80-8cae-48bd-a052-c2d66a1d4f72_1.txtffmpeg-transcode-37200c27-686b-4035-b39d-3bdbc0f88bbd_1.txtffmpeg-transcode-a178c664-6b53-46e9-8acc-7dd052654c67_1.txt

[Luke 42077]

The third ffmpeg log there is using hardware encoding. You're getting software in some other cases because deinterlacing is needed and that's not supported right now by the hardware encoder.

[GTsitouridis 2]

3 minutes ago, Luke said:

The third ffmpeg log there is using hardware encoding. You're getting software in some other cases because deinterlacing is needed and that's not supported right now by the hardware encoder.

I guess that means it is a limitation of the HW of RPi4 and thus it will not be improved right?

[Luke 42077]

Just now, GTsitouridis said:

I guess that means it is a limitation of the HW of RPi4 and thus it will not be improved right?

For now yes, although we'll follow it to see if anything changes. 

@softworkz may have more insight.