This suggests the original content was sourced from Netflix .
Because high-quality video files are very large, they are often split into smaller "parts" and compressed using the RAR format. You would need "part2," "part3," and so on to successfully extract the full video file. How to Use This File DHMR.S01E09.NF.1080p.DxM.part1.rar
Use a utility like WinRAR or 7-Zip to open "part1." These programs automatically detect the other parts and combine them into a single video file (usually an .mp4 or .mkv). This suggests the original content was sourced from Netflix
While the exact "story" behind this specific file is likely linked to the niche world of digital distribution and archiving, The File's Biography The File's Biography