AlphaSub 1.5.0b2

AlphaSub 1.5.0b2 — Real-time DCP playback + Video Export + DCP Authoring (beta)

Pro/cinema features need a Beta tester license (free during the test phase); everything else is unrestricted. Signed with Developer ID, notarized + stapled by Apple.

★ New: real-time DCP playback. Open a DCP folder (or drop it) and AlphaSub decodes the JPEG2000 picture in real time — no proxy, no waiting — with correct colour (X'Y'Z' → Rec.709, calibrated), audio, subtitles, scrubbing/JKL, and fullscreen/detached surfaces. Powered by a bundled Grok decoder (GPU colour conversion). Falls back to a viewing proxy if unavailable.

★ Deep DCP quality control. The built-in ClairMeta QC now does full subtitle-content inspection (bundled asdcp tools) and exports a self-contained HTML report.

Fixes this build:

• DCP subtitle timing is now respected on export (subtitles no longer shifted to 00:00:00:00).
• DCP export now passes easyDCP validation (PKL OriginalFileName + trailing-newline conformance).
• Smooth timecode during playback (waveform no longer stalls the readout) — plus much lighter CPU while playing.
• Import a DCP by folder auto-detection; export the signer certificate (.pem/.crt) for external KDM generation.

Video export (File ▸ Export ▸ Export Video…, ⇧⌘E): ProRes (Proxy→4444 XQ), DNxHD/HR, H.264, HEVC; MOV/MP4/MKV (multi-track soft subs) + QuickTime CEA-608 captions; burnt-in timecode + watermark; ~35 platform presets; render queue.

DCP authoring (Cinema ▸ DCP Authoring): import an OV and author InterOp or SMPTE; Copy or Rewrap media; per-language subtitle CPLs; ISDCF naming; AES-128 encryption + per-CPL KDM; Manage Signer (import/regenerate); EasyDCP .dcpdig import.

Apple Silicon native (real-time DCP playback requires Apple Silicon; Intel uses the proxy).