WhatsNew

What's New

Version 2.5.1

RVZStudio 2.5.1 is a maintenance release that fixes out-of-memory failures when encoding with the highest Zstd compression levels and updates the built-in RVZSharp engine to 1.1.1.

Fixes

• Fixed encoding with the maximum Zstd level (22) and many parallel workers failing with an OutOfMemoryException. The engine no longer reserves the level's full compression window per worker (up to ~128 MiB each at level 22); the window is now sized to the chunk being encoded.
• Out-of-memory conditions during encoding, decoding or verification are now logged as expected resource limits instead of spurious bug reports; the DolphinTool fallback still completes the operation when memory is exhausted.

Packaging and documentation

• Release bundles keep the framework-dependent single-file layout and the release_<version>_<rid>.zip naming for win-x64, win-arm64, linux-x64, linux-arm64, osx-x64 and osx-arm64; they are now written to the RVZStudio/bin/Release release path so older bundles stay available next to the new one.
• The documentation site and the repository wiki are published from the same docs/ folder and now share a side menu for easier navigation.

Version 2.5.0

RVZStudio 2.5.0 is the first cross-platform release: the WPF/Windows-only application has been rebuilt on Avalonia UI and now runs on Windows, Linux and macOS on both x64 and ARM64.

Highlights

• Cross-platform UI — the same application now ships for Windows, Linux and macOS, and automatically locates the platform-specific helper executables.
• Native RVZSharp engine — the built-in RVZSharp library is now the primary engine for encoding, decoding and verification (100% managed codecs), with DolphinTool as an automatic fallback. Input files are pre-validated against their real container magic bytes so invalid data is never wrapped into a broken RVZ.
• Disc Explorer tab — browse the file system of ISO, RVZ, WIA, GCZ, CISO, WBFS, TGC and NFS images without extracting them; copy files/folders out and compute per-file SHA-256 hashes. The log viewer is hidden while this tab is active so the tree gets the full width.
• Archive extraction with 7za fallback — ZIP, 7Z and RAR archives are extracted with SharpCompress first; when SharpCompress cannot read an archive, the bundled 7-Zip 7za console tool is used as a fallback. 7-Zip 26.04 binaries are bundled for all six platforms (Windows/Linux/macOS × x64/ARM64).
• Structured logging — all logging goes through Serilog with an on-screen log viewer, rolling daily log files and automatic bug reports for warnings and errors.
• Update checks, usage statistics and bug reporting — the application checks GitHub releases on startup, sends anonymous launch statistics and reports unexpected errors to the developer.
• Screenshot capture — press F8 to save a PNG of the application window.
• Donate button — support development directly from the header.
• Compact single-file bundles — release packages are framework-dependent single-file binaries (the .NET 10 runtime is required) with the helper tools, license, readme and these notes included.

Improvements

• Smooth overall progress bar, per-file progress, statistics cards and write-speed display.
• Drag and drop files onto the Conversion, Verification or Extraction tab.
• Wii discs with multiple partitions expose a partition selector in the Disc Explorer.
• Native extraction of ISO, WIA, GCZ, WBFS, CISO and TGC without DolphinTool.
• Scrub option zeroes non-game Wii partitions before encoding for smaller RVZ files.
• Verification logs CRC-32, MD5 and SHA-1 of the decoded image for every verified file.

Fixes

• Fixed a startup error in the tab-selection handler that logged a spurious bug report on every launch.
• Fixed message boxes failing when shown from a background thread after a batch operation.
• Fixed cancellation during verification sometimes being reported as a completed batch.
• Fixed temporary extraction folders and orphaned 7za processes being left behind when an archive could not be extracted or an operation was cancelled.
• Fixed .nkit.gcz files producing a .nkit.rvz output name instead of .rvz.
• Fixed drag-and-drop of files from several folders refusing to start the operation.
• Fixed "Copy Out" of a folder from a disc image not sanitizing the folder name.
• Fixed fatal error dialogs closing before they could be read.
• Removed stale Avalonia.Diagnostics 11.x package that conflicted with Avalonia 12.
• Native SkiaSharp/HarfBuzz debug symbols are no longer shipped in release packages.

Previous versions

See the Releases page for older versions.