4K transcoding slow?

[IceBoosteR 10]

Hi everyone,

 

I am wondering why the playback of a 4K movie is lagging. So this is just a general question, not a real problem as this does not happen very often.

So I am running Emby as a docker container on my Intel NUC (Intel Pentium Silver J5005, 4x 1.50GHz, 4MB Cache, 10W TDP) and enabled VAAPI for hardware acceleration. I see lags during the playback of the transcoding, but coul not see a performance issue on the server side.

I have attached a screenshot from the server. As you can see, CPU is somewhere to 30% usage, and VAAPI is used aswell. The transcode log is also attached.

I do only try to understand why thr playback is lagging, and how I could improve this.

Thank you

transcode.txt

[mastrmind11 722]

disable vaapi

[Luke 42077]

This should perform better with the next release, but yes, transcoding 4k content will be slower than 1080p.

[IceBoosteR 10]

This should perform better with the next release, but yes, transcoding 4k content will be slower than 1080p.

Of course it does, but I have not seen the "WHY" (CPU to slow for example). I am looking forward to that release

 

disable vaapi

I can try that but I am sure I have tried that in the past (last month?) and it did not change....

[Luke 42077]

The current release only uses VAAPI for encoding. The next release will also use it for decoding, and will improve the encoding process for it.

[IceBoosteR 10]

The current release only uses VAAPI for encoding. The next release will also use it for decoding, and will improve the encoding process for it.

Awesome. therefore I will wait for that release and test again.

[Luke 42077]

Thanks for the feedback.