daisysg297/bangumi-rename-for-emby

This is a small Python tool that batch renames anime video and subtitle files so they follow one consistent naming pattern instead of whatever format they originally came in. Anime files downloaded from different sources use different naming styles, with brackets, dashes, or embedded release group names in different places, and this script recognizes the common variations and rewrites them all into a single format: title, then season and episode number, then the release group name. The tool scans the folder you point it at and automatically walks through every subfolder inside it too, so your files do not need to already be sorted into one place. Before it renames anything, it shows you a full preview of every planned change so you can check it and confirm before the actual renaming happens, which helps avoid mistakes. If a rename would overwrite an existing file with the same name, the script skips that file instead of replacing it. Subtitle files are renamed alongside their matching video files so the two stay in sync. The script depends only on Python's built in standard library, so there is nothing extra to install to run it directly. If you want to use it on a computer without Python installed, it can also be packaged into a single standalone executable file using PyInstaller. Season and episode numbers are automatically padded to two digits in the output, and details like resolution, video codec, audio track, or language tags are dropped from the new filename, while the original file extension is kept. It supports common video formats such as mp4, mkv, avi, mov, flv, wmv, rmvb, and m4v, along with subtitle formats like srt, ass, ssa, vtt, and mks, and these lists can be extended by editing a setting near the top of the script. To run it you need Python 3.7 or newer. The README recommends backing up important files first and checking the preview carefully, and notes that the script only changes filenames, never file contents or their location, and it automatically skips temporary download files.