If you are analyzing the WEB-DL or Blu-ray source of Dune: Prophecy S01E01 , here is what you would likely discover via ffmpeg analysis commands ( ffprobe ):
Do not use -crf 23 (default) on this episode. The opening scene in the Bene Gesserit mother school will look like a pixelated mess. Stick to CRF 16–18 for archival or CRF 20–22 with -tune grain for a transparent re-encode. dune: prophecy s01e01 ffmpeg
