Is it better to have hardware or software based AV1?
That is only true at extremely low bitrates that no sane person that cares about quality would even consider using.That depends on your goal. Hardware encoding is much faster, but pure CPU encoding is much better quality. That goes for all codecs.
Be warned. Software AV1 encoding via handbrake is fairly slow, even on fast CPUs.
You would have to read reviews on them to see which one has the better quality/size ratio or you can just go by which one is faster which you can easily test yourself.If both the CPU (via iGPU) and dGPU have Av1 hardware support, which one is better to work from? (I guess with Intel, they work together via Quick Sync, is this right?).
And I must be insane than...That is only true at extremely low bitrates that no sane person that cares about quality would even consider using.