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Development notes

What's new. What's next.

A cautious look at the alpha work in progress. Features listed here are experimental and may change before broader availability.

Private alpha preparation - build 0.9.4 - May 22, 2026
  1. 0.9.4 May 22, 2026
    Feature

    Atmos object rendering test path

    Experimental object-audio handling is being tested across Apple Silicon Macs, headphones, speakers, and receiver setups.

    • add Atmos & DTS:X object rendering pipeline
    • add Spatial Audio toggle in the audio HUD
    • fix rare audio drift on chapter-jump in BD-J menus
    • fix Dolby Vision Profile 7 dual-layer FEL sync at 23.976
  2. 0.9.3 Apr 30, 2026
    Format

    VideoNow PVD support (color & mono)

    Early PVD parsing and scaling work is ready for more unusual sample coverage during the private alpha.

    • add VideoNow PVD reader (mono & color)
    • add CRT and LCD scaling presets
    • tweak Disc Library sort respects format groups
  3. 0.9.2 Apr 03, 2026
    Feature

    HD-DVD navigation engine

    XPL-driven menus, advanced content layers, and secondary video paths are being prepared for alpha feedback.

    • add Advanced Content (XPL) interpreter
    • add Secondary video / iHD overlay rendering
    • fix Subtitle PGS rendering on ultrawide displays
  4. 0.9.1 Mar 14, 2026
    Perf

    Decode pipeline on Metal

    HEVC and high-bitrate playback paths are being profiled on Apple Silicon and Intel Macs before tester distribution.

    • add Metal 3 compute path for HEVC Main 10
    • tweak Energy mode toggle in the menu bar
    • fix Rare crash when unmounting a 100 GB ISO
  5. 0.9.0 Feb 02, 2026
    Milestone

    Private alpha applications open

    Applications are now open for a limited macOS alpha. Selected testers will be invited manually when a suitable build is ready.

    • add Disc Library with cover-art lookup
    • add Drag-and-drop for ISO, IMG, MDS, BIN/CUE
    • add Continuity Resume — start on Mac, finish on iPad

What's next

The roadmap.

The roadmap is guided by technical feasibility, tester hardware coverage, and legally usable test media.

Summer 2026

LaserDisc capture playback

Open Domesday86-style LD captures with the original analog audio carriers, plus a software-side comb filter for sharper composite output.

Summer 2026

CED capacitance disc captures

Research continues on legacy capture playback and practical test coverage.

Fall 2026

UMD video

Sony's PSP format, complete with the original UMD menu system. Pairs well with a 2005 Spider-Man poster.

Late 2026

Vision Pro spatial cinema

Research continues on 3D Blu-ray playback, virtual cinema presentation, Half-SBS, frame-packed, and MVC test paths.

Private alpha

Help test the weird edges.

Apply if you have a Mac, legally owned media, and the patience to test experimental builds that may crash or fail on some formats.

Apply for the Alpha Read the FAQ