Messy video folders become a clean, browsable library with MDCz, a metadata scraper and organizer that prepares local movie files for Emby, Jellyfin, and Kodi. Point it at a folder and it recognizes titles from filenames, then pulls metadata, high-resolution covers, stills, and cast information from sources including DMM, FC2, AVBase, JavBus, JavDB, MGStage, and Prestige. Each finished title gets a standard NFO file beside the video, so your media server shows rich detail pages instead of bare filenames. The batch workbench queues folders of files, shows a diff preview of every rename before anything changes, and reports success and failure per title. Actor names arriving under different aliases from different sources merge into one canonical name with your own mapping rules. Segmented releases, STRM stream files, and external subtitle files move together with the main video during renaming. Built-in tools check for duplicate titles, apply rule-based renaming, and maintain existing library data. Run it as the Docker WebUI on your NAS at port 3838, or use the desktop builds for Windows, macOS, and Linux. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. GPL-3.0 licensed.