That is correct[0], as known from the iPad M4 analysis.
I will say SVT-AV1 has had some significant ARM64 performance improvements lately (~300% YoY, with bitrate savings at a given preset[1][2], so call it a 400% increase), so for many use-cases software AV1 encoding (rather than hardware encoding) is likely the preferred modality.
The exceptions, IMO, are concurrant gaming with streaming (niche on MacOS?) and video server transcoding. However, even these exceptions are tenuous: Because Apple Silicon doesn't play x86's logical core / boost clock games, and considering the huge multi-threaded performance of M4, I think streaming with SW encoding of AV1 is quite feasible (for single streams) for both streaming and transcoding. x86 needs a dedicated AV1 encoder more-so due to the single-threaded perf hit from running a multi-threaded background workload. And the bit-rate efficiency will be much better from SW encoding.
That said, latency will suffer and I would still appreciate a HW AV1 encoder.
I will say SVT-AV1 has had some significant ARM64 performance improvements lately (~300% YoY, with bitrate savings at a given preset[1][2], so call it a 400% increase), so for many use-cases software AV1 encoding (rather than hardware encoding) is likely the preferred modality.
The exceptions, IMO, are concurrant gaming with streaming (niche on MacOS?) and video server transcoding. However, even these exceptions are tenuous: Because Apple Silicon doesn't play x86's logical core / boost clock games, and considering the huge multi-threaded performance of M4, I think streaming with SW encoding of AV1 is quite feasible (for single streams) for both streaming and transcoding. x86 needs a dedicated AV1 encoder more-so due to the single-threaded perf hit from running a multi-threaded background workload. And the bit-rate efficiency will be much better from SW encoding.
That said, latency will suffer and I would still appreciate a HW AV1 encoder.
[0] https://en.wikipedia.org/wiki/Apple_M4 [1] https://www.phoronix.com/news/SVT-AV1-1.8-Released [2] https://www.phoronix.com/news/Intel-SVT-AV1-2.0