Skip to content

AlphaSub 1.5.0

Choose a tag to compare

View all tags
@cobaltfilms cobaltfilms released this 28 Jul 01:00
v1.5.0
ac70b97

AlphaSub 1.5.0 — Video Export & Digital Cinema

The biggest release yet: AlphaSub now renders finished video deliverables and authors, plays and quality-checks DCPs — end to end, on your Mac.

★ Video Export (Pro). File ▸ Export ▸ Export Video… opens the new export window: ProRes masters (422 family + 4444), DNxHD/DNxHR, H.264/HEVC in MOV/MP4/MKV, with platform presets (broadcast, web, socials) and your own saved presets. Subtitles burn in exactly as styled, or travel as sidecar files / embedded tracks (SRT, ASS, mov_text, CEA-608). Burned timecode window (BITC), watermarking and vertical reframing (9:16, 1:1, 4:5) included. Jobs land in a Resolve-style render queue — batch several exports, reorder, pause and resume. MKV can stream-copy the source bit-exact or re-encode with a manual bitrate.

★ DCP Authoring (Pro) — now in its own window. File ▸ Export ▸ DCP Authoring… imports the distribution DCP (audio loads onto the timeline in seconds, a viewing proxy builds in the background), then exports subtitle Version Files (VF) or self-contained Original Versions (OV) — InterOp or SMPTE, one CPL per subtitle language, ISDCF naming helper that inherits fields from the source package, XML signing, AES-128 encryption with per-CPL KDM issuing, and automatic post-export QC with a deep-analysis HTML report.

★ Real-time DCP playback (Apple Silicon). Open a DCP and play the actual JPEG 2000 picture in real time — no transcode wait. Intel Macs use the background viewing proxy.

★ Encrypted DCP import. SMPTE 429-6 packages import end-to-end — picture, sound and subtitles — once the matching content keys are loaded (sibling .keys.json, EasyDCP .dcpdig digest, or picked manually). Keys are remembered in the app keystore; decrypted essence never persists on disk.

Also in 1.5.0

  • Custom-position subtitle lines stack correctly in DCP subtitle rendering.
  • DCP subtitle settings sheet (font, size, position defaults) from the authoring window.
  • Open Recent works reliably again.

Universal (Apple Silicon + Intel; real-time DCP playback requires Apple Silicon). Signed with Developer ID, notarized + stapled by Apple. Requires macOS 14+.

Assets 4
Loading