As a layman, what does this mean roughly? Videos played on youtube will use more GPU than CPU?
Yes
Probably both, the drivers are almost the same, just need a kernel flag.
If so that's great for everybody... well almost everybody period, most notebooks have Intel gpus even if they have Optimus too.
It's probably both as all modern Intel gpus have video decoding and encoding hardware
This makes no sense to me. I've had h264 decoding on Firefox with VAAPI for years.
Mozilla has finally blessed Intel graphics hardware with the open-source VA-API video decode stack to enable that hardware acceleration by default.
Think it's enabled by default now.
But yeah, I've also had Firefox with VAAPI working with Intel Arc for a while too, I just had to set some stuff in about:config.
That will also help LibreWolf, I can't say if the code will make it into IceCat, if t's ever updated, or Abrowser.
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