Blue Archive Molru Extractor

A tool to extract assets from Blue Archive Steam version.

TSN Kozeki used as base reference for understanding Blue Archive's media catalog file structure.

Usage

1. Download MolruExtractor.
2. Move the downloaded executable into Blue Archive folder.
3. Run MolruExtractor.exe, wait for it to finish.
4. Extracted file can be found in MolruExtract folder.

Feature comparison

	MolruExtractor		Kozeki
✅	Native binary	➖	Requires Python to run
✅	Having a release file for easy usage	➖	Download/clone repository to use
✅	No additional dependencies	➖	Needs installing TSN Abstractor separately
✅	Single executable	➖	Multiple files with its dependencies
✅	Per-category extraction Can choose to skip extracting BGM, voice, or images. (See options with -? flag)	❌	Only able to extract everything at once
✅	Fast caching process	❌	Takes forever to create cache (on Windows) Can use cache provied by the author instead, but needs to wait for the author to update cache for every game update.
✅	Does not need to save cached catalog data	❌	Needs saved cache file for faster extraction process
✅	Extract with file name	✅	Extract with file name (with cache)
✅	Run on any OS (manual compiling)	✅	Run on any OS
❌	No repacking feature planned	✅	Plans to have repacking feature
➖	Unsafe extraction algorithm	✅	Uses regex to validate files to be extracted

Performance comparison

Performance is evaluated by running each program 3 times with identical flags (-q and --limit-logs), the fastest execution time is selected for comparison. Running on i5-6300U @ 2.40GHz.

	Creating cache	Extracting	Memory usage
MolruExtractor	0.02s	24s	Constant 300-460 MB
Kozeki	??? (stopped measuring after 3 hours)	1m40s	Variable 20-400 MB

Even more faster?

You can get more performance by building MolruExtractor locally. This will create an executable optimized for your CPU and disable extra safety checking in trade for performance.

1. Have Odin installed on your system.
2. Clone this repository.
3. Run build.bat, this creates MolruExtractorFast.exe.
4. Move generated executable into Blue Archive folder and run it.

License

MIT License