Do you use software like TeamViewer, AnyDesk, or Parsec? Do you have a virtual audio cable or virtual monitor driver installed? These inject virtual display adapters into Windows. Netflix sees these as "recording devices" and automatically blocks SV1 playback, forcing a downgrade to L3 (540p). Uninstall these drivers temporarily to test.
To solve this, Netflix became a founding member of the Alliance for Open Media (AOMedia) to develop , a royalty-free, next-generation video codec. To make this standard usable on real-world servers, Netflix and Intel collaborated to build SVT-AV1 (often searched in PC circles as Netflix SV1). SVT-AV1 is a highly scalable software encoder engineered to balance speed, quality, and computational latency perfectly across CPU architectures. Why the SV1 Codec Matters on PC netflix sv1 pc