A while ago I came across a guide that was for converting content by Joybell. Couldn’t find it again to share but here are the settings I got from it.
Video Codec: H.265 10-bit FPS: Same as Source/Variable Encoder Preset: Fast (Gave smallest file size over Slow) Avg Bitrate: 900 2–Pass Encoding
I started with the Apple TV 1080 Preset and edited from there. I feel that it works pretty good without any major quality loss. It’s what I have been converting all my TV Shows to for the better part of a year.
Edit: Checked file sizes as that’s what’s important here. Went from 3.5GB 45 Minute 1080p BluRay source to ~400MB compressed. Numbers are for 155 file average. Used 11 Seasons Doctor Who as an example. All together it was 548GB ripped from BluRay to 65GB compressed.