If you are working with libvpx (the library encoding VP8/VP9 video), "Season 5" (S05) likely refers to modern iterations or the maturity of the VP9 codec. VP9 is the standard for high-efficiency web video (YouTube default) before AV1 took over.

Avoid Constant Quality (CRF) modes if your Vera S05 streams over live networks. Instead, use Constrained Quality or Constant Bitrate (CBR) to prevent sudden network congestion. -g 120 (Keyframe interval) Parameter: -b:v 2M -maxrate 2.5M -bufsize 1M