Is this reasonable CPU usage for recording without transcode

[ngeunit1]

Hi,

I have a docker container running nextpvr on a Core i3-1315U nuc running Ubuntu 24.04 server. I am running a record of a 720p baseball game and seeing about 40% (of a core) usage with Recording Auto Transcode set to Leave Recording in Native Format. I attached a log for the start of the recording a bit of the recording. It seems like it might be transcoding, but I am not sure why?

I am just wondering if this seems like a reasonable about of CPU usage for a single recording? I was hoping to scale up to many more recordings in parallel and figuring out how to partition the CPU on this machine (or if I would need another machine).

Thanks for your help!

[mvallevand]

I hate snippets whatever you posted means little to me. I do see that during recording you have optional thumbnail extraction and timing enabled so yes this line is transcoding the thumbnails. Depending on what client you use maybe disable them.

Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))

I don't even see the log for the mp4 conversion so can't help answer the question.

Martin

[ngeunit1]

Ah, I missed the drop down for generate thumbnails (I was looking under the recording header on the general pane and it was a little above that).

After turning that off I am seeing a reduction from 40% of a CPU core to about 6% of a CPU core, which seems reasonable.

I was not looking for any mp4 output and I am fine with ts output (which is what is happening), so it seems good.

Thanks for the advice.

[mvallevand]

You can also turn off the timing file generation to make CPU even lower but sub only made that possible by editing the config.xml file (in /config)

<GenerateTiming>false</GenerateTiming>

If you are using the web client for playback both settings do help but mp4 post processing might even be better.

Martin