: A double extension usually used in file naming to indicate the original container (MKV) was converted or is being presented as an MP4 for wider device compatibility.

: A high-quality file "downloaded" directly from a streaming service (Netflix) without re-encoding. 1080p : Full High Definition resolution.

You can find more detailed breakdowns of this episode's plot on Addams Family Wiki or TV Tropes . 'Wednesday' Season 1 Episode 4 Review - The Cinema Spot