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v10/packages
Christian PillsburyandClaude Opus 4.8 3a9d1faca0 feat(spf): add presentation-anchor primitives for the shared live anchor
Introduce media/presentation-anchor.ts realizing the single presentation-level
anchor decision (internal/decisions/live-presentation-anchor.md):
presentationAnchorFromBuffer / presentationAnchorEstimate derive the shared
(media-time ↔ PDT) anchor — buffer-pinned, or the pre-buffer estimate — and
positionTrackToAnchor re-origins any track onto it by its own per-segment PDT.
Tested to generalize anchorTrackToBufferedSegment. Consumed by the
anchor-live-tracks reactor conversion (next), which replaces the per-track
anchor primitives.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-25 10:00:45 -07:00
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