AV1 playback in LibreELEC on a Pi 4
AV1 playback in LibreELEC on a Pi 4
I installed LibreELEC on a Raspberry Pi 4 yesterday and it's working really well, except for AV1 playback. The thing is, it's almost fast enough but the video stutters every few seconds and is a little slower than it should be. Is there a way to make it faster, by switching the decoder or enabling multi-core decode or something like that?
I found this decoder which might be what I'm searching for but I don't know how to make it work in LibreELEC.
Have you checked CPU usage when playing back AV1?
No, will do that once I get back home
I tested it again and it actually works sometimes and then sometimes it gets slow again. When it gets slow, CPU usage is at around 330%-380% in top for Kodi. That's the maximum, I think, since it has 4 cores.
The Pi is already overclocked but overclocking it further is probably my only option. I don't have active cooling so I'm not sure if that would be a good idea.
Get active cooling as this kinda sounds like thermal throttling.
I added a 40mm Noctua fan blowing on the heatsinks of my pi3 to get it to play h265, otherwise I'd keep having issues like what you're describing.
That's probably the cheapest option. I already have it overclocked and it's running at about 82-83°C (But at 85°C it resets to the base clock so maybe the overclock isn't even being used). Adding active cooling might also allow me to overclock it further.
Based on this pull request, looks like dav1d is at v1.3 already. It was originally merged back in 2021, though there may be a config setting to enable it.
In fact, that PR pulls a package file from videolan, take a look at the commit for dav1d v1.3.
So you may need to ssh in and download the dav1d package: https://wiki.libreelec.tv/development/release-management