It's pretty hilarious that the best set-top device you can buy for media playback, is one that was released 4.5 years ago and hasn't had a hardware update since.
4.5 years ago? The original NVIDIA Shield TV was launched in 2015. It turns 9 years old this year.
The Shield is really starting to show its age at this point (the Android TV home screen lags hard on 4K displays), but NVIDIA made a couple of key technical decisions with the SoC that have kept it relevant for so long. Making sure to include a cutting-edge media decoder block with full 8/10-bit HEVC decoding support, as well as VP9 Profile 0 support, has kept it from being obsoleted by newer video codecs. AV1 is just now taking off, and even then it's going to be years until it's commonly in use for home media (be it legit or pirated media).
Though NVIDIA was also the beneficiary of a free SoC porting, thanks to Nintendo. Since Big N paid to get the Tegra X1 ported from TSMC 20nm to 16nm, NVIDIA hasn't needed to take the risk of investing in a major new revision of the SoC to keep production going. Otherwise, they would have needed to stop selling the Shield TV since 20nm is no longer available.
And not to discount their software support, either. 9 years of updates on an Android device is practically unheard of. Even flagship Android smartphones aren't getting that kind of support!
It's a side project that has been far more successful than it has any right to be. I'm keeping my fingers crossed that NVIDIA will build a successor based on the Switch 2's SoC.