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fix(ism): signal Dolby Vision and Atmos from Smooth manifests

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Init segments now carry dvcC/dvvC with a profile-keyed sample entry and the dby1 brand; track ids cover the manifest URL so per-range ladders stop colliding, and the remote path carries the Atmos flag without inventing a JOC count.
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imSp4rky
2026-09-01 12:50:59 -06:00
parent a6d0b97ed7
commit 7310273594
8 changed files with 277 additions and 18 deletions
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docs/dev/service-architecture.md
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@@ -365,7 +365,9 @@ A typical `get_tracks` therefore looks like fetching the manifest text with
the media-sequence-number IV for AES-128 keys that have no explicit IV.
- **ISM** has no list of segments and no init segments: the parser synthesizes segment URLs
from the `<c>` fragment timeline, and rebuilds a `moov`/`ftyp` init box from `CodecPrivateData`
(supported for AVC, HEVC, DV-over-HEVC, AAC, EC-3, and TTML).
(supported for AVC, HEVC, DV-over-HEVC, AAC, EC-3, and TTML). A track id covers the manifest
URL, so a title you build from one ISM manifest per codec or range keeps every variant:
`Tracks.add` no longer reads the second manifest's tracks as duplicates of the first.
## DRM hooks