[swebs]

Do hardware decoders for vp9 even exist?

[vetinari]

Any Intel GPU since Kaby Lake can decode VP9 in hardware. So can AMD since Raven Ridge[1] and Nvidia since GM206.

On Android, it has been mandated by CTS for several years already.

[1] Except Radeon VII, which is technically Vega.

[zerocrates]

There's accelerated decoding on at least some of the modern mobile platforms, and from all the major graphics providers on laptop/desktop.