This indicates the video was sourced directly from a streaming service (WEB-DL) and then "remuxed." A remux takes the raw video and audio streams without re-encoding them, preserving the original quality while changing the container (often to MKV).
This paper covers the technical and narrative details for the media release titled This specific file represents a high-quality "multiplexed" (Mux) version of the second episode of the psychological thriller series, The Alienist . Release Specifications The Alienist 1x02 WEB-DLMux Ita Eng 5 1 Earine
In this installment, the core investigative team officially coalesces. Dr. Laszlo Kreizler and John Moore are joined by Sara Howard , the first woman hired by the NYPD, and the Isaacson brothers , who introduce then-futuristic forensic science techniques like "fingermarks". This indicates the video was sourced directly from
The Alienist Season 1 Episode 2 Review: A Fruitful Partnership and the Isaacson brothers