There are hardware AV1 encoders and decoders.

Objective metrics and tools for video encoding and source signal quality: netflix/vmaf, easyVmaf, psy-ex/metrics, ffmpeg-quality-metrics,

Ffmpeg settings for low-latency encoding:

  # h264, h265
  -preset ultrafast
  -tune zerolatency

  # AV1
  -c:v libsvtav1
  -preset 8
  -svtav1-params tune=0:latency-mode=1
  -g 60

GPU Screen Recorder and Sunlight server expose some encoder options in GUI forms, but parameter optimization is still manual; nothing does easyVmaf with thumbnails of each rendering parameter set with IDK auto-identification of encoding artifacts.

Ardour has a "Loudness Analyzer & Normalizer" with profiles for specific streaming services.

What are good target bitrates for low-latency livestreaming 4k with h264, h265 (HDR), and AV1?

FFmpeg Explorer is made with ffmpeg.wasm: https://github.com/antiboredom/ffmpeg-explorer .. web: https://ffmpeg.lav.io/