ReScene.Lib

A .NET library for working with ReScene (SRR/SRS) and RAR archive formats, used for scene release preservation and reconstruction.

Structure

ReScene.Lib/
├── ReScene/              # Library project (net8.0 + net10.0)
│   ├── RAR/              # RAR 4.x/5.x header parsing, patching, decompression
│   ├── SRR/              # SRR file format reading and writing
│   ├── SRS/              # SRS file format reading, writing, and reconstruction
│   └── Core/             # Brute-force orchestration, comparison
└── ReScene.Tests/        # xUnit tests (run on net8.0 and net10.0)
    └── TestData/         # Real-world SRR/RAR/SRS test files

RAR (namespace ReScene.RAR)

Low-level RAR archive header parsing and patching.

• Parses RAR 4.x and RAR 5.0 block headers (archive, file, service, comment, recovery record, etc.)
• Reads file metadata: filenames, sizes, CRCs, timestamps (DOS + NTFS precision), host OS, compression method/dictionary
• Decompresses RAR archive comments (RAR 2.x, 3.x, 5.0, and PPMd algorithms)
• In-place binary patching of RAR 4.x headers (host OS, file attributes, LARGE flag) with automatic CRC recalculation
• Transparent multi-volume RAR streaming (RarStream)
• SFX (self-extracting) archive support — scans for RAR markers within executables
• Detects custom scene packer signatures

SRR (namespace ReScene.SRR)

SRR file format support for scene release reconstruction.

• Parses and creates SRR files, a RAR-like container that stores only headers (no file data)
• Supports embedded RAR 4.x/5.0 headers, stored files (NFO, SFV), OSO hash blocks, and volume size metadata
• Extracts stored files: ExtractStoredFiles extracts everything with relative paths preserved (validating every name and data range before the first write), ExtractStoredFile extracts one file flattened to its base name

SRS (namespace ReScene.SRS)

SRS file format support for media sample reconstruction.

• Parses and creates SRS files across 7 container formats: AVI, MKV, MP4, WMV, FLAC, MP3, and M2TS/Stream
• Reconstructs sample files from SRS metadata and original media files with CRC32 verification
• MP3 tag parsing (ID3v2, ID3v1, Lyrics3, APE), FLAC metadata block parsing, and MKV EBML lacing decompression

Core (namespace ReScene.Core)

High-level reconstruction and comparison logic. Orchestrates brute-force WinRAR version discovery, RAR archive reconstruction from SRR metadata, and file-level comparison between SRR/SRS/RAR archives.

Requirements

• .NET 8.0 or .NET 10.0

Building

dotnet build ReScene/ReScene.csproj

Testing

dotnet test ReScene.Tests/ReScene.Tests.csproj

Dependencies

Package	Version
Crc32.NET	1.2.0
System.IO.Hashing	9.0.4
CliWrap	3.10.0
DiscUtils.Iso9660	0.16.13
DiscUtils.Udf	0.16.13

License

See LICENSE for details.