For issues or if an update is required, you can create an issue on GitHub. Alternatively, I can be found through Discord via by my bot's support server. Though it is not for BeatmapExporter specifically, I do not mind it being used for my other utilities such as this one.
BeatmapExporter is a program/tool that can mass-export your osu! beatmap library from the modern osu!lazer storage format.
osu!lazer does not have a "Songs/" folder as "stable" osu! does. Lazer's files are stored under hashed filenames and other information about the beatmap is contained in a local "Realm" database on your PC.
This new storage format which osu! uses results in a better experience while playing the game. However, a result of this system is that you can not easily export all or part of your songs library for sharing or moving back to osu! stable.
This utility allows you to export beatmaps back into .osz files.
There is a beatmap filter system allowing you to select a portion of your library to only export certain maps (for example, above a certain star rating, specific artists/mappers, specific gamemodes, specific collections, etc). You can also simply export your entire library at once.
As of version 1.2, there is an option to export only audio files. Rather than entire beatmap archives, only .mp3 audio files will be exported.
The .mp3 files are tagged with basic artist/song information, and the background file from osu! is embedded where possible.
If a beatmap uses a non-mp3 audio format, FFmpeg is required to transcode into mp3. ffmpeg.exe (for Windows) can be placed on your system PATH or simply alongside BeatmapExporter.exe before launching BeatmapExporter.
As of version 1.3.8, there is an option to export only beatmap background image files.
As of version 2.1.0, there is an option to export your score replays from specific beatmaps.
As of version 2.2.0, there is an option to export as a "Songs" folder rather than seperate .osz archives. This may be more convenient if transferring directly to stable.
As of version 2.0, I have developed a more complete GUI application for BeatmapExporter. If there are bugs with the GUI application on your system, while you should feel free to report these issues to let me know, it has been built in a way to allow the older CLI (command line) program to still be available and receive updates. The CLI should also continue to be fully functional if you prefer it or are just more comfortable using it already. When viewing releases, the original CLI versions are named BeatmapExporterCLI, while the newer GUI versions are named simply BeatmapExporter.
The GUI is likely to have more bugs on non-Windows platforms as I have not had anyone confirm if it even works on those platforms yet. Please do let me know in a GitHub issue if it is not working, but even if it is unusable the CLI version should still work for you.
All features including the format of exported files are functionally the same between the versions.
Filtering beatmaps screenshot in the GUI:
Executables are available from the Releases section on GitHub.
If you are on a Windows system and your osu! database is in the default location (%appdata%\osu), you should be able to simply run the application. If you changed the database location when install osu!lazer, the program will be unable to locate it and will prompt you to enter it.
If you are not on Windows, I included default directories for OSX and Linux and it should automatically work, but it is untested on these platforms.
You can alternatively launch the program with the database folder as the launch argument if you already know it will be in an unusual location. The database folder needed contains a "files" folder. This folder can also be opened from in-game if you moved it and are unsure where it is located. If you did not move it, it should just automatically work.
Exporting beatmaps with a tag with the original CLI program version:
