It’s feasible as long as all the stuff you want to auth supports oauth, oidc, or saml. It might be a bit overkill for your use case, unless you have a bunch of services you didn’t mention. Keycloak has a bit of a learning curve, but works great once you get past that.

I think it’ll happen at some point, nearly always does. I have one locked on an exploitable version and it works great, I think there’s a lot of potential for emulation and homebrew if it opens up more.

OPS, rutracker, or I ask someone to check RED for me.

Aside from what has been posted already, the vast majority of good P2P groups only release on private trackers, some with notices to not repost publicly. There is a massive collection of quality content that is either not available on publics or completely dead and forgotten.

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A properly muxed mkv will display the resulting audio bitrate. And if you use opusenc, it will embed the encoder settings in the track.

There are a handful of groups putting out what I would consider decent AV1 encodes. A couple PTs allow them, and there are groups on 1337x. Just grab a couple from each tag you can find and see if they meet your needs. Generally speaking, look for groups which note their source, which encoder they are using, and ideally what settings they used in general.

AV1 has come a long way fast, but in my experience a good x265 encode is still better for live action.

Maybe https://www.srrdb.com/ is what you’re looking for?

Private trackers would be your best bet if you don’t know anyone already.